Perhaps you should try some spelling variations:
dung thanh » duong thanh, dong thanh, dang thanh
chieu sach » chinh sach, chiet tach, chieu sang
toc chieu » toc thieu, doc hieu, hoc thieu
manh dung » manh hung, manh tung, anh dung
dung phan » dung nhan, dung luan, dung ha
phan cong » thanh cong
cong tan » cong tac, cong san, cong thanh
phan tap » phan lap, han tap, pha tap

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

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