Perhaps you should try some spelling variations:
thanh tung » thanh cong
hieu lang » chieu sang, hieu quang, nhieu tang
cua nhung » va nhung
tung cua » trung cua, tuong cua, dung cua
cong tan » cong tac, cong thanh, cong ty
cong san » cong tac
toan ban » van 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 tung cua nhung ((((cong tan) or (cong trinh))) or (cong san)) toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho hieu lang - thanh tung cua nhung ((((cong tan) OR (cong trinh))) OR (cong san)) toan ban.
• Adding a wildcard symbol may retrieve word variants: ho hieu lang - thanh tung cua nhung ((((cong tan) or (cong trinh))) or (cong san)) toan ban*.