Perhaps you should try some spelling variations:
hieu nganh » vien nganh, hiem ngan, hieu manh
chieu sach » chinh sach, chiet tach, chieu sang
dung cong » dung trong
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan cao » toan ban, toan tap
cong va » dong va, cong ha, luong va
va dung » van dung, va duong, vat dung
tinh » trinh, dinh, minh

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((((hieu nganh) or (trieu tinh))) or (chieu sach)) - thanh cong va dung cong tac toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((((hieu nganh) OR (trieu tinh))) OR (chieu sach)) - thanh cong va dung cong tac toan cao.
• Adding a wildcard symbol may retrieve word variants: ho ((((hieu nganh) or (trieu tinh))) or (chieu sach)) - thanh cong va dung cong tac toan cao*.