Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
tranh cua » manh cua
doanh cua » doanh luan
chi tach » chiet tach, chi thanh, che tac
cong tac » cong ty
tac tran » tan tran, tac trai, tac tren
tran cau » tran chau, toan cau, ran cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi ((chi tach) or (chiu trach)) - canh ((tranh cua) or (doanh cua)) thong cong tac tran cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chi tach) OR (chiu trach)) - canh ((tranh cua) OR (doanh cua)) thong cong tac tran cau.
• Adding a wildcard symbol may retrieve word variants: doi ((chi tach) or (chiu trach)) - canh ((tranh cua) or (doanh cua)) thong cong tac tran cau*.