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, dung cua
trung cap » truong cao, trung tam
song van » hoang van, trong van, duong van
cong san » cong tac
tuan cau » toan cau, quan cau, tuan cu

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 ((trung cua) or (trung cap)) dung ((song van) or (cong san)) tuan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sach - thanh ((trung cua) OR (trung cap)) dung ((song van) OR (cong san)) tuan cau.
• Adding a wildcard symbol may retrieve word variants: hoc thieu sach - thanh ((trung cua) or (trung cap)) dung ((song van) or (cong san)) tuan cau*.