Perhaps you should try some spelling variations:
hoc thanh » hoc nhanh, hoan thanh, ha thanh
cach hoc » cach thuc, cach thoi, dich hoc
cuu dong » cuu cong, cuu tong, cuu long
hoc phan » hoc dan, hoc pho
nhan dan » phan dau, gian dan, nhan tai
su cach » su sach, tu cach, su cac
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: su cach hoc tap, nghien cuu dong ((hoc thanh) or (hoc phan)) hoa hoc xa hoi va nhan dan~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su cach hoc tap, nghien cuu dong ((hoc thanh) OR (hoc phan)) hoa hoc xa hoi va nhan dan.
• Adding a wildcard symbol may retrieve word variants: su cach hoc tap, nghien cuu dong ((hoc thanh) or (hoc phan)) hoa hoc xa hoi va nhan dan*.