like: đề tựa → →
die Kreislaufprobleme ☊ 
vấn đề tuần hoàn ☊ 
☊ Dogs can be trained to obey orders. ☊ order ☊
to comply with the regulations ☊ regulation ☊
preface ☊ đề tựa ☊ die Kreislaufprobleme ☊ vấn đề tuần hoàn ☊ ☊