Perhaps you should try some spelling variations:
nhanh khong » nhanh chong, nhan khong, nhanh hong
nganh khong » nganh cong, nhanh chong, nganh nong
sach hoc » cach hoc, sach hoi, mach hoc
phat van » pham van, phan van, phap van
tu sach » thu sach, su sach, te sach
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: tu sach hoc tap, nghien cuu mo hoc ((nhanh khong) or (nganh khong)) hoc xa hoi va phat van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach hoc tap, nghien cuu mo hoc ((nhanh khong) OR (nganh khong)) hoc xa hoi va phat van.
• Adding a wildcard symbol may retrieve word variants: tu sach hoc tap, nghien cuu mo hoc ((nhanh khong) or (nganh khong)) hoc xa hoi va phat van*.