Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
hanh trinh » hanh chinh
ho chieu » theo chieu, hoc thieu, doi chieu
van dung » van dong, xay dung, tin dung
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan tap » toan ban
va dung » va duong, vat dung, va ung

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 - ((hanh trinh) or (canh tranh)) ((va dung) or (van dung)) cong tac toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu tinh - ((hanh trinh) OR (canh tranh)) ((va dung) OR (van dung)) cong tac toan tap.
• Adding a wildcard symbol may retrieve word variants: ho chieu tinh - ((hanh trinh) or (canh tranh)) ((va dung) or (van dung)) cong tac toan tap*.