Perhaps you should try some spelling variations:
thanh trung » thanh tung
nhung cong » dung cong, thong cong, hang cong
hieu lang » chieu sang, hieu quang, nhieu tang
trung cap » truong cao, trung tam
cap nhung » cam nhung, vap nhung, dap nhung
hoc hieu » hoc thieu, hoc hien, doc hieu
cong san » cong tac
toan cao » toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hieu lang - thanh trung cap nhung cong san ((toan cao) or (((toan ban) or (van ban))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu lang - thanh trung cap nhung cong san ((toan cao) OR (((toan ban) OR (van ban)))).
• Adding a wildcard symbol may retrieve word variants: hoc hieu lang - thanh trung cap nhung cong san ((toan cao) or (((toan ban) or (van ban))))*.