Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
chiet tach » chieu sach
hanh trinh » canh tranh, hanh chinh
van dung » van dong, xay dung, tin dung
cong ban » cong bang, cong san, cong tan
ban than » ban thanh, van thanh, ban hang
than man » than ma, thanh san, tran manh
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: hoc ((chieu xanh) or (chiet tach)) - hanh trinh ((va dung) or (van dung)) cong ban than man~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu xanh) OR (chiet tach)) - hanh trinh ((va dung) OR (van dung)) cong ban than man.
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu xanh) or (chiet tach)) - hanh trinh ((va dung) or (van dung)) cong ban than man*.