Perhaps you should try some spelling variations:
hanh doanh » hang doanh, chinh doanh, doanh doanh
doanh luan » doanh nhan
tieu sach » chieu sach, dien sach, te sach
luan hung » luan chung, lan hung, luan ung
hung cong » nhung cong, hung cuong, phung cong
tap toan » tap doan, tap quan
bai toan » bai tap
van tuan » van quan, van ban, anh tuan

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: theo tieu sach - hanh doanh luan hung cong ((((tap toan) OR (bai toan))) or (van tuan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu sach - hanh doanh luan hung cong ((((tap toan) OR (bai toan))) OR (van tuan)) cau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo tieu sach - hanh doanh luan hung cong ((((tap toan) OR (bai toan))) or (van tuan)) cau*".