hữu ích 
helpful like: nützlich → →
nützlich ☊ 
hữu ích ☊ 
☊ nützlich ☊ tiện ích, lợi ☊ ☊ nützlich ☊ 实用的 ☊ shíyòng de nützlich ☊ 有用的 ☊ yǒu yòng de Ich könnte etwas Nützliches besuchen. ☊ Anh muốn đi đến những nơi cần thiết. ☊ (Lektion 17, Nr. 189) Dieses Praktikum war sehr lehrreich und nützlich für mein Studium und meine persönliche Entwicklung. ☊ Khóa thực tập rất giàu kiến thức và hữu ích cho việc học đại học và sự phát triển cá nhân của tôi . ☊ (Lektion 103, Nr. 1768) some useful bits of information ☊ bit ☊
The newsletter is a useful channel of communication between teacher and students. ☊ channel ☊
I've made some useful contacts in journalism. ☊ contact ☊
This meeting has been, without doubt, one of the most useful we have had so far. ☊ without/beyond doubt ☊
a useful piece of equipment for the kitchen ☊ equipment ☊
extremely important/useful/complicated ☊ extremely ☊
It's a useful introduction to an extremely complex subject. ☊ introduction ☊
They produced two reports, neither of which contained any useful suggestions. ☊ neither ☊
He offered some useful advice. ☊ offer ☊
Overall, this is a very useful book. ☊ overall ☊
particularly good/important/useful ☊ particularly ☊
Why would the closure of hospitals be in the public interest (= useful to ordinary people)? ☊ public ☊
I wrote down the name of the hotel for future reference (= because it might be useful in the future). ☊ reference ☊
Your local library will be a useful source of information. ☊ source ☊
tip (on/for sth): useful tips on how to save money ☊ tip ☊
a useful gadget ☊ useful ☊
useful (to do sth): It can be useful to write a short summary of your argument first. ☊ useful ☊
useful (to sb): He might be useful to us. ☊ useful ☊
useful (for sth/for doing sth): These plants are particularly useful for brightening up shady areas. ☊ useful ☊
Don't just sit watching television—make yourself useful! ☊ useful ☊
This information could prove useful. ☊ useful ☊
Your knowledge of German may come in useful (= be useful in a particular situation). ☊ useful ☊