to improve, reform, raise the standard of ☊ 
提高 → ☊ 
Cải thiện 
improve like: cải thiện → →
verbessern ☊ 
làm cho tốt hơn, cải thiện ☊ 
改进 ☊ gǎi jìn die Verbesserung ☊ cải thiện ☊ ☊ verbessern ☊ làm cho tốt hơn, cải thiện ☊ ☊ assume (that)...: It is reasonable to assume (that) the economy will continue to improve. ☊ assume ☊
It may be many years before the situation improves. ☊ before ☊
They're improving day by day. ☊ by ☊
It is simply not the case that prison conditions are improving. ☊ case ☊
The new airport will improve communications between the islands. ☊ communication ☊
Standards in health care have improved enormously compared to 40 years ago. ☊ compare ☊
a strike to improve pay and conditions ☊ condition ☊
Stop smoking and you will see a continuous improvement in your health. ☊ continuous ☊
Predictions of an early improvement in the housing market proved false. ☊ FALSE ☊
Figures for April show a slight improvement on previous months ☊ figure ☊
to improve traffic flow (= make it move faster) ☊ flow ☊
He made a genuine attempt to improve conditions. ☊ genuine ☊
I'm sure a few days off would do you a power of good (= improve your health). ☊ do good, do sb good ☊
The weather gradually improved. ☊ gradually ☊
The performance improved as their confidence grew. ☊ grow ☊
They applied for a home improvement loan. ☊ home ☊
The situation is not good but we live in hope that it will improve. ☊ hope ☊
If he improved his IT skills, he'd (= he would) easily get a job. ☊ if ☊
The advertisements are intended to improve the company's image. ☊ image ☊
We've certainly improved on last year's figures. ☊ improve on/upon sth ☊
Sales figures continue to show signs of improvement. ☊ improvement ☊
indication (that...): There are clear indications that the economy is improving. ☊ indication ☊
His English is improving little by little. ☊ little by little ☊
Unfortunately, there is nothing we can do to improve matters. ☊ matter ☊
an overall improvement in standards of living (= affecting everyone) ☊ overall ☊
The new management techniques aim to improve performance. ☊ performance ☊
Bankruptcy is a real possibility if sales don't improve. ☊ possibility ☊
Please suggest possible ways in which you would improve the existing program. ☊ possible ☊
They tried everything they possibly could to improve the situation. ☊ possibly ☊
Her condition is not improving as we hoped. You must prepare yourselves for the worst. ☊ prepare ☊
Improving the product's presentation (= the way it is wrapped, advertised, etc.) should increase sales. ☊ presentation ☊
prospect for sth: Long-term prospects for the economy have improved. ☊ prospect ☊
Their quality of life improved dramatically when they moved to France. ☊ quality ☊
relation (between A and B): We seek to improve relations between our two countries. ☊ relation ☊
relationship (between A and B): The relationship between the police and the local community has improved. ☊ relationship ☊
research (into/in/on sth): They're researching into ways of improving people's diet. ☊ research ☊
a local campaign to improve road safety ☊ safety ☊
The company is trying to improve customer satisfaction. ☊ satisfaction ☊
scheme (to do sth): to introduce/operate a scheme to improve links between schools and industry ☊ scheme ☊
The government aims to improve public services, especially education. ☊ service ☊
Her work is showing some signs of improvement. ☊ sign ☊
sign (of doing sth): The gloomy weather shows no sign of improving. ☊ sign ☊
social advancement (= improving your position in society) ☊ social ☊
There is some hope that things will improve. ☊ some ☊
it strikes sb how, what, etc...: It suddenly struck me how we could improve the situation. ☊ strike ☊
Her technique has improved a lot over the past season. ☊ technique ☊