Perhaps you should try some spelling variations:
nhanh khong » nhanh chong, nganh khong, nhan khong
hoc nhanh » hoc nganh, hoc phan
sach hoi » sach doi, sach moi, cach thoi
thuoc xa » thuoc ma, thuoc va, thuoc tai
thuoc la » thuoc ma, thuoc va, thuoc tai
tu sach » thu sach, su sach, te sach
hoi tap » hoi dap, hoc tap, hoi tai
cuu mon » cuu mo, cuu mot, cuu cong
mon hoc » toan hoc, dong hoc
va nhan » van nhan, ca nhan, va phan
nhan va » nhan tai, nhan dan, nhan tao

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 hoi tap, nghien cuu mon hoc nhanh khong ((thuoc xa) or (thuoc la)) hoi va nhan va~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach hoi tap, nghien cuu mon hoc nhanh khong ((thuoc xa) OR (thuoc la)) hoi va nhan va.
• Adding a wildcard symbol may retrieve word variants: tu sach hoi tap, nghien cuu mon hoc nhanh khong ((thuoc xa) or (thuoc la)) hoi va nhan va*.