Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
cong thanh » dong thanh, cong trinh, cong tan
hieu lang » chieu sang, hieu quang, nhieu tang
trang va » tran van, hang va
toan cao » toan ban
toan tap » toan ban
ho hieu » ho chieu, hoi hieu, nho hieu

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

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