Perhaps you should try some spelling variations:
cang thang » cong thanh, dang thanh
chieu xanh » chieu sach, chieu sang, chieu tinh
hang hang » nang hang, hung thang, lang thang
dung cong » dung trong
ho chieu » theo chieu, hoc thieu, doi chieu
cong tac » cong ty
tran cau » tran chau, ran cau, tra cau
toan cau » toan cao, toan ban, toan tap
va dung » van dung, va duong, vat dung

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 xanh - ((hang hang) OR (cang thang)) va dung cong tac ((tran cau) or (toan cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu xanh - ((hang hang) OR (cang thang)) va dung cong tac ((tran cau) OR (toan cau)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu xanh - ((hang hang) OR (cang thang)) va dung cong tac ((tran cau) or (toan cau))".
• Adding a wildcard symbol may retrieve word variants: ho chieu xanh - ((hang hang) OR (cang thang)) va dung cong tac ((tran cau) or (toan cau))*.