Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
chau tinh » cuu tinh, ha tinh, cua tinh
truong va » truong dai, truong cao, truong dao
hang cong » dang cong, hang nong, bang cong
cong tac » cong ty
tac phan » tac pham, tai phan, tac phat
phan dau » phan tu, hang dau

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((chau tinh) or (chieu sach)) - thanh ((trung tam) or (truong va)) hang cong tac phan dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chau tinh) OR (chieu sach)) - thanh ((trung tam) OR (truong va)) hang cong tac phan dau.
• Adding a wildcard symbol may retrieve word variants: ho ((chau tinh) or (chieu sach)) - thanh ((trung tam) or (truong va)) hang cong tac phan dau*.