Perhaps you should try some spelling variations:
nghiep thong » nghiep trong, nghiep thanh, nghiep nhung
hanh truong » hanh trong, anh truong, manh truong
nghe thong » he thong
mot chieu » doi chieu
ho chieu » theo chieu, hoc thieu, doi chieu
cong tac » cong ty
tac toan » tap toan, tam toan, hach 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: ((mot chieu) or (ho chieu)) xanh - hanh truong ((nghiep thong) OR (nghe thong)) cong tac toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((mot chieu) OR (ho chieu)) xanh - hanh truong ((nghiep thong) OR (nghe thong)) cong tac toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((mot chieu) or (ho chieu)) xanh - hanh truong ((nghiep thong) OR (nghe thong)) cong tac toan cao".
• Adding a wildcard symbol may retrieve word variants: ((mot chieu) or (ho chieu)) xanh - hanh truong ((nghiep thong) OR (nghe thong)) cong tac toan cao*.