Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
thanh tung » thanh cong
quang dung » quang trung, ung dung, cuong dung
ho chieu » theo chieu, hoc thieu, doi chieu
cua dung » cua dang, cua dong, qua dung
cong tac » cong ty
ran cau » ban cau, can cau, tran chau
van cau » van dau, van hau, van chat

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: ho chieu xanh - thanh tung ((cua dung) OR (quang dung)) cong tac ((ran cau) OR (van cau))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu xanh - thanh tung ((cua dung) or (quang dung)) cong tac ((ran cau) OR (van cau))~".
• Adding a wildcard symbol may retrieve word variants: ho chieu xanh - thanh tung ((cua dung) or (quang dung)) cong tac ((ran cau) OR (van cau))*.