Perhaps you should try some spelling variations:
thieu sach » chieu sach, thien hach, hieu cach
hoc thieu » toc thieu, hoc hien
thanh van » thanh toan, thanh phan, thanh nhan
dang cong » dung cong
cong dan » cong san, cong tan, huong dan
than ban » thanh ban, than man, nhuan ban
toan ban » van ban

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 ((thanh van) OR (thanh san)) dang cong dan ((than ban) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sach - hanh ((thanh van) OR (thanh san)) dang cong dan ((than ban) OR (toan ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu sach - hanh ((thanh van) OR (thanh san)) dang cong dan ((than ban) or (toan ban))".
• Adding a wildcard symbol may retrieve word variants: hoc thieu sach - hanh ((thanh van) OR (thanh san)) dang cong dan ((than ban) or (toan ban))*.