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
trung dai » truong dao, trung tam, trung cap
cong tan » cong tac, cong san, cong thanh
tran ban » tranh ban, tran van, toan ban

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: doi ((chieu tinh) OR (chau tinh)) - thanh ((trung dai) OR (truong dai)) nhung cong tan tran ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((chieu tinh) or (chau tinh)) - thanh ((trung dai) OR (truong dai)) nhung cong tan tran ban~".
• Adding a wildcard symbol may retrieve word variants: doi ((chieu tinh) or (chau tinh)) - thanh ((trung dai) OR (truong dai)) nhung cong tan tran ban*.