Perhaps you should try some spelling variations:
doanh doanh » toan doanh, doanh hoan, doanh thanh
hien sach » dien sach, kien sach, thien hach
tong cong » trong cong, cong cong, dung cong
van thanh » ban thanh
doanh va » doan va, doanh tai, doanh cua
van tuan » van quan, van ban, anh tuan
va tong » va thong, va tuong, va trong

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hien sach - doanh doanh va tong cong ((van thanh) or (van tuan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien sach - doanh doanh va tong cong ((van thanh) OR (van tuan)) cau.
• Adding a wildcard symbol may retrieve word variants: hoc hien sach - doanh doanh va tong cong ((van thanh) or (van tuan)) cau*.