Perhaps you should try some spelling variations:
doanh doanh » toan doanh, doanh hoan, doanh thanh
canh doanh » hanh doanh, chinh doanh, kinh doanh
kien sach » dien sach, vien bach, kien mac
cua nhung » va nhung
vuong dan » tuong dan, xuong dan, vuong dao
hoc kien » hoc hien, hoc vien, hoa kien
toan cau » toan cao, toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc kien sach - ((canh doanh) or (doanh doanh)) cua nhung ((vuong dan) OR (huong dan)) toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc kien sach - ((canh doanh) OR (doanh doanh)) cua nhung ((vuong dan) OR (huong dan)) toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc kien sach - ((canh doanh) or (doanh doanh)) cua nhung ((vuong dan) OR (huong dan)) toan cau".
• Adding a wildcard symbol may retrieve word variants: hoc kien sach - ((canh doanh) or (doanh doanh)) cua nhung ((vuong dan) OR (huong dan)) toan cau*.