Perhaps you should try some spelling variations:
thieu sach » chieu sach, thien hach, hieu cach
hoc thieu » toc thieu, hoc hien
doanh cua » doanh luan
nhung don » nhung van, nhung bo
dung cong » dung trong
than cua » nhan cua, thai cua, ban cua
dan toan » van toan, dan than, manh toan
toan cau » 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 ((than cua) or (doanh cua)) ((nhung don) or (dung cong)) dan toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sach - hanh ((than cua) OR (doanh cua)) ((nhung don) OR (dung cong)) dan toan cau.
• Adding a wildcard symbol may retrieve word variants: hoc thieu sach - hanh ((than cua) or (doanh cua)) ((nhung don) or (dung cong)) dan toan cau*.