Perhaps you should try some spelling variations:
thanh trung » thanh tung
trung cap » truong cao, trung tam
cong vang » cong lang, cong quang, cong ngang
doc hieu » toc thieu, hoc thieu, hoc hien
cap dung » ap dung, cao dung, chan dung
cong van » cong san, song van, cong tan
phan dau » phan tu, hang dau
doi chi » doi khi

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((doc hieu) or (doi chi)) xanh - thanh trung cap dung ((cong van) or (cong vang)) phan dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doc hieu) OR (doi chi)) xanh - thanh trung cap dung ((cong van) OR (cong vang)) phan dau.
• Adding a wildcard symbol may retrieve word variants: ((doc hieu) or (doi chi)) xanh - thanh trung cap dung ((cong van) or (cong vang)) phan dau*.