Perhaps you should try some spelling variations:
thieu sach » chieu sach, thien hach, hieu cach
hoc thieu » toc thieu, hoc hien
trung cua » truong cua, trung tuan, trung cap
dung cong » dung trong
tang cua » mang cua, hang cua, tang luan
cong dan » cong san, cong tan, huong dan
phan dau » 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 - thanh ((tang cua) or (trung cua)) dung cong dan ((phan dau) or (phan tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sach - thanh ((tang cua) OR (trung cua)) dung cong dan ((phan dau) OR (phan tu)).
• Adding a wildcard symbol may retrieve word variants: hoc thieu sach - thanh ((tang cua) or (trung cua)) dung cong dan ((phan dau) or (phan tu))*.