Perhaps you should try some spelling variations:
thieu sach » chieu sach, thien hach, hieu cach
thanh dung » thanh duong, thanh tung, thanh hung
dung quang » dang quang, dung quan, luong quang
quang dang » quang dung, quang dong, quang hoang
dang cong » dung cong
cong tan » cong tac, cong san, cong thanh
phan van » pham van, thanh van, luan van
phan lap » phan dau

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc thieu sach - thanh dung quang dang cong tan ((phan van) or (phan lap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc thieu sach - thanh dung quang dang cong tan ((phan van) OR (phan lap))*.