Perhaps you should try some spelling variations:
cong thanh » dong thanh, cong trinh, truong thanh
chieu tinh » trieu tinh, lieu tinh, chau tinh
doi chieu » doc hieu, doi chi, ho chieu
tranh va » tranh van, trang va, trinh va
cong tan » cong tac, cong san, cong ty
phan cau » phan dau, phan cac, phan lap
va lang » va nang, hoa 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 - canh tranh va lang ((cong tan) OR (cong thanh)) ((phan cau) or (phan tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu tinh - canh tranh va lang ((cong tan) OR (cong thanh)) ((phan cau) OR (phan tu)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu tinh - canh tranh va lang ((cong tan) OR (cong thanh)) ((phan cau) or (phan tu))".
• Adding a wildcard symbol may retrieve word variants: doi chieu tinh - canh tranh va lang ((cong tan) OR (cong thanh)) ((phan cau) or (phan tu))*.