Perhaps you should try some spelling variations:
thieu sach » chieu sach, thien hach, hieu cach
thanh toan » thanh hoa, thanh san, tinh toan
hoc thieu » toc thieu, hoc hien
tang luan » dung luan
nhung don » nhung van, nhung bo
dung cong » dung trong
manh toan » anh tuan, tinh toan
anh tang » anh bang, anh dang, anh nang

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 - anh tang luan ((nhung don) or (dung cong)) ((manh toan) OR (thanh toan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sach - anh tang luan ((nhung don) OR (dung cong)) ((manh toan) OR (thanh toan)) cau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu sach - anh tang luan ((nhung don) or (dung cong)) ((manh toan) OR (thanh toan)) cau*".