Perhaps you should try some spelling variations:
thieu sach » chieu sach, thien hach, hieu cach
hanh doanh » chinh doanh, doanh doanh, kinh doanh
hang doanh » nhung doanh, van doanh, dung doanh
cua phuong » cuu phuong, cuc phuong, luan phuong
cua thuong » cua truong, ca thuong, cua huong
hoc thieu » toc thieu, hoc hien
cong tan » cong tac, cong san, cong thanh
tan van » tran van, tang van, luan 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 - ((hanh doanh) OR (hang doanh)) ((cua phuong) or (cua thuong)) cong tan van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sach - ((hanh doanh) OR (hang doanh)) ((cua phuong) OR (cua thuong)) cong tan van ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu sach - ((hanh doanh) OR (hang doanh)) ((cua phuong) or (cua thuong)) cong tan van ban".
• Adding a wildcard symbol may retrieve word variants: hoc thieu sach - ((hanh doanh) OR (hang doanh)) ((cua phuong) or (cua thuong)) cong tan van ban*.