Perhaps you should try some spelling variations:
thuong cong » thong cong, thuong con, thuong dong
theo chieu » theo tieu, ho chieu, theo chu
hoc thieu » toc thieu, hoc hien
trang va » hang va
tran van » luan van
cong tan » cong tac, cong san, cong thanh
tran cao » toan cao, tran chau, trang cho

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((theo chieu) or (hoc thieu)) sang - thanh ((trang va) or (tran van)) thuong cong tan tran cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chieu) OR (hoc thieu)) sang - thanh ((trang va) OR (tran van)) thuong cong tan tran cao.
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) or (hoc thieu)) sang - thanh ((trang va) or (tran van)) thuong cong tan tran cao*.