Perhaps you should try some spelling variations:
theo tiem » theo tieu, them niem, thep tieu
tiem nang » tin nang, tich nang
hanh tang » hanh trang, anh tang, hanh mang
tran chau » tranh chap, tran huu
tang xay » dang xay, thong xay, trong xay
cong tan » cong tac, cong thanh, cong ty
cong san » cong tac
tra cau » tra sau, ta cau, tra cuu

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo tiem nang - hanh tang xay dung ((cong tan) OR (cong san)) ((tra cau) or (tran chau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tiem nang - hanh tang xay dung ((cong tan) OR (cong san)) ((tra cau) OR (tran chau)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo tiem nang - hanh tang xay dung ((cong tan) OR (cong san)) ((tra cau) or (tran chau))".
• Adding a wildcard symbol may retrieve word variants: theo tiem nang - hanh tang xay dung ((cong tan) OR (cong san)) ((tra cau) or (tran chau))*.