Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
tranh cua » doanh cua, manh cua
cua nhung » va nhung
hoc hieu » hoc thieu, doc hieu, hoc dieu
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: ((hoc hieu) or (hoc hien)) nganh - canh tranh cua nhung cong tac toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc hieu) OR (hoc hien)) nganh - canh tranh cua nhung cong tac toan cao.
• Adding a wildcard symbol may retrieve word variants: ((hoc hieu) or (hoc hien)) nganh - canh tranh cua nhung cong tac toan cao*.