Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
thanh hung » thanh huong, thanh tung, thanh trung
thong cong » trong cong, tong cong, thong thong
hoc thieu » toc thieu, hoc hien
va thong » va thuong, va phuong, he thong
cong tac » cong ty
tac than » tac thanh, tam than, tac nhan
than cao » toan cao, thai cao, than cap
hung va » huong va, hung van, hang va

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc thieu) or (theo chieu)) sang - thanh hung va thong cong tac than cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thieu) OR (theo chieu)) sang - thanh hung va thong cong tac than cao*.