Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
chiet tach » chieu sach
hung thanh » nhung thanh, phung thanh, hung thang
thanh xay » thanh tay, thanh lay, thanh xuan
dung cong » dung trong
cong tac » cong ty
tran cau » tran chau, ran cau, tra cau
toan cau » toan cao, toan ban, toan tap

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) or (chiet tach)) - hung thanh xay dung cong tac ((tran cau) or (toan cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sang) OR (chiet tach)) - hung thanh xay dung cong tac ((tran cau) OR (toan cau)).
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sang) or (chiet tach)) - hung thanh xay dung cong tac ((tran cau) or (toan cau))*.