Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, kieu tinh
chau tinh » cuu tinh, ha tinh, cua tinh
hang cong » dang cong, hang nong, bang cong
tranh va » tranh van, trang va, trinh va
dan phan » doan phan, van phan, dam phan
dan chan » dan gian, dan ca, van chat
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 tinh) OR (chau tinh)) - canh tranh va hang cong ((dan phan) or (dan chan)) tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chieu tinh) OR (chau tinh)) - canh tranh va hang cong ((dan phan) OR (dan chan)) tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((chieu tinh) OR (chau tinh)) - canh tranh va hang cong ((dan phan) or (dan chan)) tu".
• Adding a wildcard symbol may retrieve word variants: doi ((chieu tinh) OR (chau tinh)) - canh tranh va hang cong ((dan phan) or (dan chan)) tu*.