Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
chieu tinh » trieu tinh, lieu tinh, chau tinh
cong thanh » dong thanh, cong trinh, cong tan
thanh nhan » thanh phan, thanh san, thanh toan
cong thai » cong hai, hong thai, cong tac
dung cong » dung trong
thai lua » thai luan, thai luat, thai cua
lua dung » qua dung, luan hung, qua duong
nhan tap » nhan tai, nhan tao, han tap

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 sach) or (chieu tinh)) - cong thai lua dung cong thanh nhan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chieu sach) OR (chieu tinh)) - cong thai lua dung cong thanh nhan tap.
• Adding a wildcard symbol may retrieve word variants: doi ((chieu sach) or (chieu tinh)) - cong thai lua dung cong thanh nhan tap*.