Perhaps you should try some spelling variations:
doanh khong » doanh thuong, doanh khoa, doanh chung
nghien cua » nghien cuu, nghiep cua, nghiep vua
cach thuc » cac thu
cong toan » cong tan, cong hoan, cong tuan
khong hoc » khung hoc, thong hoc, khong thuoc
anh thuc » am thuc, dan thuc, anh tu
nhan van » nhan dan, nhan va, phan van
hoc xa » hoc ma
hoi ca » hoi cua, hoi cac, hoi cau

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((cach thuc) OR (anh thuc)) tap, nghien cua cong toan doanh khong hoc xa hoi ca nhan van~".
• Adding a wildcard symbol may retrieve word variants: tu ((cach thuc) OR (anh thuc)) tap, nghien cua cong toan doanh khong hoc xa hoi ca nhan van*.