Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, kieu tinh
nhung cong » dung cong, thong cong, hang cong
chau tinh » cuu tinh, ha tinh, cua tinh
tranh va » tranh van, trang va, trinh va
cong ban » cong bang, cong san, cong tan
than cau » toan cau, phan cau, thanh chau
than cap » khan cap, thanh lap, thanh cac

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

• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu tinh) OR (chau tinh)) - canh tranh va nhung cong ban ((than cau) OR (than cap))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu tinh) or (chau tinh)) - canh tranh va nhung cong ban ((than cau) OR (than cap))~".
• Adding a wildcard symbol may retrieve word variants: theo ((chieu tinh) or (chau tinh)) - canh tranh va nhung cong ban ((than cau) OR (than cap))*.