Perhaps you should try some spelling variations:
thieu sach » chieu sach, thien hach, hieu cach
nhung cong » dung cong, thong cong, hang cong
hoc thieu » toc thieu, hoc hien
trung cua » truong cua, trung tuan, trung cap
truong ca » truong cao, truong va, trong ca
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 cua) or (truong ca)) nhung cong dan van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sach - hanh ((trung cua) OR (truong ca)) nhung cong dan van ban.
• Adding a wildcard symbol may retrieve word variants: hoc thieu sach - hanh ((trung cua) or (truong ca)) nhung cong dan van ban*.