Perhaps you should try some spelling variations:
chieu xanh » chieu sang, chieu tinh, hieu manh
chieu sach » chinh sach, chiet tach, chieu sang
van thang » van thanh, van khang, van than
tan trong » tran trong, toan trong, than trong
trong cho » trong tho, trong co, rong cho
van hang » van khang, van hoang, ban hang
cong tan » cong tac, cong san, cong thanh

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 xanh) or (chieu sach)) - thanh cong ((van hang) OR (van thang)) cong tan trong cho~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chieu xanh) OR (chieu sach)) - thanh cong ((van hang) OR (van thang)) cong tan trong cho.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((chieu xanh) or (chieu sach)) - thanh cong ((van hang) OR (van thang)) cong tan trong cho".
• Adding a wildcard symbol may retrieve word variants: doi ((chieu xanh) or (chieu sach)) - thanh cong ((van hang) OR (van thang)) cong tan trong cho*.