Perhaps you should try some spelling variations:
thieu sach » chieu sach, thien hach, hieu cach
truong cua » truong ca, truong quan, truong cao
hoc thieu » toc thieu, hoc hien
trung cua » trung tuan, trung cap, dung cua
dung cong » dung trong
cong dan » cong san, cong tan, huong dan
gian dan » gian lang

You may be able to get more results by adjusting your search query.

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