Perhaps you should try some spelling variations:
doi chieu » doc hieu, doi chi, mot chieu
hang mang » hang hang, hang mong, hanh mang
hang cong » hang nong, bang cong, thanh cong
dang cong » dung cong
ho chieu » theo chieu, hoc thieu, mot chieu
cua dang » cua cong, cua ban
cong tan » cong tac, cong san, cong thanh
tan toan » tan tran, tap toan, van toan
toan cao » toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho chieu) OR (doi chieu)) xanh - ((hang mang) or (hang cong)) cua dang cong tan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (doi chieu)) xanh - ((hang mang) OR (hang cong)) cua dang cong tan toan cao*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) OR (doi chieu)) xanh - ((hang mang) or (hang cong)) cua dang cong tan toan cao*".