Perhaps you should try some spelling variations:
nghien cua » nghien cuu, nghiep cua, nghiep vua
doanh khoa » toan khoa
toc doanh » toan doanh, tri doanh, hoa doanh
khoa hoc » hoa hoc
nhan dan » phan dau, gian dan, nhan tai
tu cach » tu cac
te sach » toc sach
cua dan » cua dang, cua ban, ca dan
va nhan » van nhan, ca nhan, va phan
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: ((tu cach) or (te sach)) hoc tap, nghien cua dan toc doanh khoa hoc xa hoi va nhan dan~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu cach) OR (te sach)) hoc tap, nghien cua dan toc doanh khoa hoc xa hoi va nhan dan.
• Adding a wildcard symbol may retrieve word variants: ((tu cach) or (te sach)) hoc tap, nghien cua dan toc doanh khoa hoc xa hoi va nhan dan*.