Perhaps you should try some spelling variations:
thieu sach » chieu sach, thien hach, hieu cach
hoc thieu » toc thieu, hoc hien
hanh tram » hanh tam, hanh trang, thanh tran
nhung don » nhung van, nhung bo
dung cong » dung trong
manh toan » thanh toan, anh tuan, tinh toan
tram van » tran van, tam van, trang van
toan cao » toan ban, toan tap

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 - hanh tram van ((nhung don) or (dung cong)) manh toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sach - hanh tram van ((nhung don) OR (dung cong)) manh toan cao.
• Adding a wildcard symbol may retrieve word variants: hoc thieu sach - hanh tram van ((nhung don) or (dung cong)) manh toan cao*.