Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
doi chieu » doc hieu, doi chi, ho chieu
cua tong » cua cong, cua dong, cua song
cua nong » cua cong, cuu nong, cua dong
cong tan » cong tac, cong san, cong thanh
tran ban » tranh ban, toan ban, tran bai
tran van » luan van

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 - canh tranh ((cua tong) OR (cua nong)) cong tan ((tran ban) or (tran van))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu tinh - canh tranh ((cua tong) OR (cua nong)) cong tan ((tran ban) OR (tran van)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu tinh - canh tranh ((cua tong) OR (cua nong)) cong tan ((tran ban) or (tran van))".
• Adding a wildcard symbol may retrieve word variants: doi chieu tinh - canh tranh ((cua tong) OR (cua nong)) cong tan ((tran ban) or (tran van))*.