Perhaps you should try some spelling variations:
thieu sach » chieu sach, thien hach, hieu cach
trung tuan » trung thanh, trung tam, tran tuan
truong cua » truong ca, truong quan, truong cao
nhung cong » dung cong, thong cong, hang cong
hoc thieu » toc thieu, hoc hien
cong dan » cong san, cong tan, huong dan
dan van » dang van, doan van, dao van

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