Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
hanh trinh » canh tranh, hanh chinh
sat dung » suat dung, dat dung, sat vung
vat dung » van dung, va dung, viet dung
cong san » cong tac
san toan » van toan, dan toan, manh toan
toan tap » toan ban
chu van » cuu van, chu han

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

• If you are trying to use Boolean operators, they must be ALL CAPS: chao ((chieu xanh) OR (chu van)) - hanh trinh ((sat dung) OR (vat dung)) cong san toan tap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "chao ((chieu xanh) or (chu van)) - hanh trinh ((sat dung) OR (vat dung)) cong san toan tap~".
• Adding a wildcard symbol may retrieve word variants: chao ((chieu xanh) or (chu van)) - hanh trinh ((sat dung) OR (vat dung)) cong san toan tap*.