Perhaps you should try some spelling variations:
thieu sach » chieu sach, thien hach, hieu cach
hoc thieu » toc thieu, hoc hien
tranh van » tran van, trinh van, thanh van
van nhung » van nhuong, va nhung, van hung
cong dan » cong tan, huong dan, cong dong
cong san » cong tac
phan cau » phan dau, phan tu, phan lap
phan cac » nhan cach, phan dau, phan lap

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 - canh tranh van nhung ((cong dan) or (cong san)) ((phan cau) or (phan cac))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sach - canh tranh van nhung ((cong dan) OR (cong san)) ((phan cau) OR (phan cac)).
• Adding a wildcard symbol may retrieve word variants: hoc thieu sach - canh tranh van nhung ((cong dan) or (cong san)) ((phan cau) or (phan cac))*.