Perhaps you should try some spelling variations:
thieu sach » chieu sach, thien hach, hieu cach
khach sang » khach hang, khach cong, khai sang
hoc thieu » toc thieu, hoc hien
khach san » khach hang, thanh san
cong dan » cong tan, huong dan, cong dong
cong san » cong tac
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 - ((khach sang) or (khach san)) va thuong ((cong dan) or (cong san)) toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sach - ((khach sang) OR (khach san)) va thuong ((cong dan) OR (cong san)) toan ban.
• Adding a wildcard symbol may retrieve word variants: hoc thieu sach - ((khach sang) or (khach san)) va thuong ((cong dan) or (cong san)) toan ban*.