Perhaps you should try some spelling variations:
thieu sach » chieu sach, thien hach, hieu cach
hoc thieu » toc thieu, hoc hien
mang cua » manh cua, dung cua, ban cua
cua nong » cua cong, cuu nong, cua dong
cong dan » cong tan, huong dan, cong dong
cong san » cong tac
phan cau » phan cac, phan tu, phan lap
phan dau » phan tu, hang dau

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