Perhaps you should try some spelling variations:
nghien huu » nghien cuu, nguyen huu, nhiem huu
nhan thong » nhan trong, nha thong, nhan khong
thong hoa » thong khoa, thong ha, thong hoc
cach hoc » cach thuc, cach thoi, dich hoc
hoc nhan » hoc nhanh, nhoc nhan, hoc phan
tu cach » tu cac
huu mot » cuu mot, huy mot, hieu mot
mot hoc » mon hoc, mo hoc, mot goc
va nhan » van nhan, ca nhan, va nha
va phan » van phan, va phat, va phap

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 hoc tap, nghien huu mot hoc nhan thong hoa xa hoi ((va nhan) or (va phan)) dan~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu cach hoc tap, nghien huu mot hoc nhan thong hoa xa hoi ((va nhan) OR (va phan)) dan.
• Adding a wildcard symbol may retrieve word variants: tu cach hoc tap, nghien huu mot hoc nhan thong hoa xa hoi ((va nhan) or (va phan)) dan*.