Perhaps you should try some spelling variations:
canh doanh » hanh doanh, chinh doanh, doanh doanh
nhung cong » dung cong, thong cong, hang cong
kinh sach » sinh sach, tinh sach, chinh sach
dinh sach » sinh sach, tinh sach, chinh sach
doanh va » doan va, doanh tai, doanh cua
cong van » cong vang, cong san, song van
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 ((kinh sach) OR (dinh sach)) - canh doanh va nhung cong van ((toan cao) or (van ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((kinh sach) OR (dinh sach)) - canh doanh va nhung cong van ((toan cao) OR (van ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((kinh sach) OR (dinh sach)) - canh doanh va nhung cong van ((toan cao) or (van ban))".
• Adding a wildcard symbol may retrieve word variants: hoc ((kinh sach) OR (dinh sach)) - canh doanh va nhung cong van ((toan cao) or (van ban))*.