Perhaps you should try some spelling variations:
nhanh dong » hanh dong, nhanh chong, anh dong
nhan khong » nhan thong, nhanh chong, nganh khong
sach hoc » cach hoc, sach hoi, mach hoc
phan van » pham van, thanh van, luan van
su sach » so sach, vu sach
va phan » van phan, va phat, va phap
mo hoc » mon hoc, co hoc
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 sach hoc tap, nghien cuu mo hoc ((nhanh dong) or (nhan khong)) hoc xa hoi va phan van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach hoc tap, nghien cuu mo hoc ((nhanh dong) OR (nhan khong)) hoc xa hoi va phan van.
• Adding a wildcard symbol may retrieve word variants: su sach hoc tap, nghien cuu mo hoc ((nhanh dong) or (nhan khong)) hoc xa hoi va phan van*.