Perhaps you should try some spelling variations:
nhanh khong » nhanh chong, nganh khong, nhan khong
khong thuoc » khang thuoc, hong phuoc, dong thuoc
nghiep va » nghiep vu
hoc nhanh » hoc nganh, hoc phan
sach hoc » cach hoc, sach hoi, mach hoc
thuoc xa » thuoc ma, thuoc va, thuoc la
nhan dan » phan dau, gian dan, nhan tai
tu sach » thu sach, su sach, te sach
mot hoc » mon hoc, mo hoc, mot goc
nhan va » nhan tai, nhan tao, phan van

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