Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu tinh » trieu tinh, lieu tinh, chau tinh
nhung cong » dung cong, thong cong, hang cong
cua nhung » va nhung
ho chieu » theo chieu, hoc thieu, doi chieu
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan tap » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho chieu tinh - ((thanh trung) or (canh tranh)) cua nhung cong tac toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu tinh - ((thanh trung) OR (canh tranh)) cua nhung cong tac toan tap.
• Adding a wildcard symbol may retrieve word variants: ho chieu tinh - ((thanh trung) or (canh tranh)) cua nhung cong tac toan tap*.