Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
theo chieu » theo tieu, ho chieu, theo chu
hanh tang » hanh trang, hanh mang, hanh tung
anh tang » anh bang, anh dang, anh nang
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan ban » van ban
doi chi » doi khi

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 (doi chi)) xanh - ((hanh tang) or (anh tang)) va nhung cong tac toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chieu) OR (doi chi)) xanh - ((hanh tang) OR (anh tang)) va nhung cong tac toan ban.
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) or (doi chi)) xanh - ((hanh tang) or (anh tang)) va nhung cong tac toan ban*.