Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
thanh phan » thanh pho, thanh san, thanh toan
manh tung » manh hung, thanh tung
tan thanh » tran thanh, tang thanh, toan thanh
hieu van » hieu va, thien van, lieu va
tung cap » trung cap, cung cap, thong cap
han cong » phan cong, hang cong, hanh cong
cong tan » cong tac, cong san, cong thanh
cap han » cap phan, cap can, cap hay

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 van) or (chieu sach)) - manh tung cap han cong tan thanh phan~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc ((hieu van) OR (chieu sach)) - manh tung cap han cong tan thanh phan*.