Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
hang hang » nang hang, cang thang, hung 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 sang - hang hang va dung cong tac ((tran cau) or (toan cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sang - hang hang va dung cong tac ((tran cau) OR (toan cau)).
• Adding a wildcard symbol may retrieve word variants: ho chieu sang - hang hang va dung cong tac ((tran cau) or (toan cau))*.