Perhaps you should try some spelling variations:
thieu sach » chieu sach, hieu cach, theo sach
thien hach » thien thanh, hien hanh
canh doanh » hanh doanh, chinh doanh, doanh doanh
truong dao » truong dai, truong cao, truong bo
doanh cua » doanh luan
luong dao » duong dao, luong giao, huong dan
cua hung » cua nhung, cua chung, cua huong
cua chu » sua chua

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) or (thien hach)) - canh doanh cua hung ((luong dao) OR (truong dao)) cua chu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu sach) OR (thien hach)) - canh doanh cua hung ((luong dao) OR (truong dao)) cua chu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu sach) or (thien hach)) - canh doanh cua hung ((luong dao) OR (truong dao)) cua chu".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu sach) or (thien hach)) - canh doanh cua hung ((luong dao) OR (truong dao)) cua chu*.