Perhaps you should try some spelling variations:
chieu tinh » lieu tinh, chau tinh, kieu tinh
anh sang » lanh sang, anh bang, anh dang
anh dung » anh dong, anh huong, sach dung
va trong » va truong, va thong, va tuong
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: theo ((chieu tinh) or (trieu tinh)) - ((anh sang) or (anh dung)) va trong cong tac toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu tinh) OR (trieu tinh)) - ((anh sang) OR (anh dung)) va trong cong tac toan cao.
• Adding a wildcard symbol may retrieve word variants: theo ((chieu tinh) or (trieu tinh)) - ((anh sang) or (anh dung)) va trong cong tac toan cao*.