Perhaps you should try some spelling variations:
thanh thang » nhanh thang, thanh thanh, thanh hang
thanh trung » thanh tung
chieu sang » chieu sach, chieu xanh, hieu lang
doi chieu » doc hieu, doi chi, ho chieu
cong tac » cong ty
toan cao » toan ban, toan tap
va hang » van hang, va nang, va lang

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chieu sang - ((thanh trung) OR (thanh thang)) va hang ((cong san) OR (cong tac)) toan cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sang - ((thanh trung) OR (thanh thang)) va hang ((cong san) OR (cong tac)) toan cao".
• Adding a wildcard symbol may retrieve word variants: doi chieu sang - ((thanh trung) OR (thanh thang)) va hang ((cong san) OR (cong tac)) toan cao*.