Perhaps you should try some spelling variations:
nhung song » nhung cong, nhung bong, nhung chong
canh doanh » hanh doanh, chinh doanh, doanh doanh
dinh sach » tinh sach, chinh sach, dinh cac
sinh sach » chinh sach, sinh san, sang sach
doanh va » doan va, doanh tai, doanh cua
song van » hoang van, trong van, duong van
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 ((dinh sach) or (sinh sach)) - canh doanh va nhung song van ((toan cau) or (van ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((dinh sach) OR (sinh sach)) - canh doanh va nhung song van ((toan cau) OR (van ban)).
• Adding a wildcard symbol may retrieve word variants: hoc ((dinh sach) or (sinh sach)) - canh doanh va nhung song van ((toan cau) or (van ban))*.