Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
doi chieu » doc hieu, doi chi, mot chieu
tuan cong » thuan cong, luan cong, toan cong
tran cong » tran hong, trien cong, tran hoang
tuong van » truong van, trong van, duong van
van dung » van dong, xay dung, tin dung

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 - thanh cong ((tuan cong) or (tran cong)) tuong van dung cho~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - thanh cong ((tuan cong) OR (tran cong)) tuong van dung cho*.