Perhaps you should try some spelling variations:
doanh khoa » toan khoa
hoa doanh » toan doanh, hoa dan
van thanh » ban thanh
cach hoc » cach thuc, cach thoi, dich hoc
cuu tong » cuu cong, cuu tinh, huu tung
tong hoa » thong hoa, trong hoa, tong hop
khoa hoc » hoa hoc
van tuan » van quan, van ban, anh tuan
su cach » su sach, tu cach, su cac
hoc xa » hoc ma

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

• Performing a fuzzy search may retrieve terms with similar spellings: su cach hoc tap, nghien cuu tong hoa doanh khoa hoc xa hoi ((van thanh) OR (van tuan)) van~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su cach hoc tap, nghien cuu tong hoa doanh khoa hoc xa hoi ((van thanh) OR (van tuan)) van".
• Adding a wildcard symbol may retrieve word variants: su cach hoc tap, nghien cuu tong hoa doanh khoa hoc xa hoi ((van thanh) OR (van tuan)) van*.