Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
toc chieu » toc thieu, doc hieu, hoc thieu
tranh cua » doanh cua, manh cua
cua nong » cua cong, cuu nong, cua dong
cong dan » cong tan, huong dan, cong dong
cong san » cong tac
than cao » toan cao, thai cao, than cap

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc chieu tinh - canh tranh cua nong ((cong dan) OR (cong san)) than cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc chieu tinh - canh tranh cua nong ((cong dan) OR (cong san)) than cao".
• Adding a wildcard symbol may retrieve word variants: toc chieu tinh - canh tranh cua nong ((cong dan) OR (cong san)) than cao*.