Perhaps you should try some spelling variations:
hieu lang » chieu sang, hieu quang, nhieu tang
cong cac » cuong cac, cong tac, cong cau
han cong » phan cong, hang cong, hanh cong
cong tan » cong tac, cong san, cong thanh
toan cao » toan tap
toan ban » van ban
ho hieu » ho chieu, hoi hieu, nho hieu
cac han » cac nhan, cac phan, cac dan

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 cong cac han cong tan ((toan cao) OR (toan ban))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho hieu lang - thanh cong cac han cong tan ((toan cao) OR (toan ban))".
• Adding a wildcard symbol may retrieve word variants: ho hieu lang - thanh cong cac han cong tan ((toan cao) OR (toan ban))*.