Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
nhung cong » dung cong, thong cong, hang cong
hanh tran » hanh trang, thanh tran, hanh tram
van nhung » van nhuong, va nhung, van hung
tan thanh » tran thanh, tang thanh, toan thanh
thanh cha » thanh ha, thanh nha, thanh phan
tran van » luan van
cong tan » cong tac, cong san, cong thanh
hieu va » lieu va, hieu qua

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc ((hieu va) or (chieu sach)) - hanh tran van nhung cong tan thanh cha~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc ((hieu va) OR (chieu sach)) - hanh tran van nhung cong tan thanh cha*.