Perhaps you should try some spelling variations:
nghien thu » nghiem thuc, nghiep thuc, nghien cuu
thuc cach » thuoc sach, truoc cach, thuc hanh
anh duong » canh duong, anh huong, anh dong
cach hoc » cach thuc, cach thoi, dich hoc
cong hoc » dong hoc, cong hoa, cong coc
hoc benh » soc benh, hoc kinh, so benh
nhan van » nhan dan, nhan va, phan van
hoc anh » hoc nganh, hoc nhanh, ngoc anh

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

• If you are trying to use Boolean operators, they must be ALL CAPS: thuc cach hoc tap, nghien thu cong hoc anh duong ((hoc xa) OR (hoc ma)) hoc benh nhan van~.
• Adding a wildcard symbol may retrieve word variants: thuc cach hoc tap, nghien thu cong hoc anh duong ((hoc xa) or (hoc ma)) hoc benh nhan van*.