Perhaps you should try some spelling variations:
thieu sach » chieu sach, thien hach, hieu cach
thanh tung » thanh cong
tran trong » gian trong, quan trong, tran hong
hoc thieu » toc thieu, hoc hien
tung tran » trung tran, hung tran, huong tran
cong san » cong tac
san van » tan van, luan van, tran van

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thieu sach - thanh tung tran trong cong san van ban~.
• Adding a wildcard symbol may retrieve word variants: hoc thieu sach - thanh tung tran trong cong san van ban*.