Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
chieu tinh » trieu tinh, lieu tinh, chau tinh
dung cong » dung trong
lua dung » qua dung, luan hung, qua duong
cong tan » cong tac, cong san, cong thanh
cong ha » cong hoa, dong ha, cong tac
tan dat » dan dat, ban dat, tan dac
dat may » dam may
ha lua » ca lua, hoa luan, chat lua

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 ha lua dung cong tan dat may~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chieu sach) OR (chieu tinh)) - cong ha lua dung cong tan dat may*.