Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
thanh tung » thanh cong
dung cong » dung trong
thu sach » tu sach, thuat sach, thuoc sach
tac dung » sach dung, xay dung, tin dung
cong san » cong tac
san phan » san pham, van phan, sat phan
phan cau » phan dau, phan cac, phan tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: chao ((chieu sach) or (thu sach)) - ((thanh trung) or (thanh tung)) tac dung cong san phan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: chao ((chieu sach) OR (thu sach)) - ((thanh trung) OR (thanh tung)) tac dung cong san phan cau.
• Adding a wildcard symbol may retrieve word variants: chao ((chieu sach) or (thu sach)) - ((thanh trung) or (thanh tung)) tac dung cong san phan cau*.