Perhaps you should try some spelling variations:
hoi hieu » hoi phieu, hoi tieu, moi hieu
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, nho hieu, co 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) OR (hoi hieu)) lang - thanh cong cac han cong tan ((toan cao) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho hieu) OR (hoi 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) OR (hoi hieu)) lang - thanh cong cac han cong tan ((toan cao) or (toan ban))".
• Adding a wildcard symbol may retrieve word variants: ((ho hieu) OR (hoi hieu)) lang - thanh cong cac han cong tan ((toan cao) or (toan ban))*.