Perhaps you should try some spelling variations:
nghien cac » nghiep cach, nghien cuu, nghiep cay
hoc nhanh » hoc phan
khong hoc » khung hoc, thong hoc, khong thuoc
thu sach » tu sach, thuat sach, thuoc sach
sach hoc » cach hoc, sach hoi, mach hoc
cac cong » cua cong
nhan van » nhan dan, nhan va, phan van
ma hoi » mai hoi, xa hoi, ma hoa
hoi ca » hoi cua, hoi cac, hoi cau

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach hoc tap, nghien cac cong ((hoc nganh) or (hoc nhanh)) khong hoc ma hoi ca nhan van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach hoc tap, nghien cac cong ((hoc nganh) OR (hoc nhanh)) khong hoc ma hoi ca nhan van.
• Adding a wildcard symbol may retrieve word variants: thu sach hoc tap, nghien cac cong ((hoc nganh) or (hoc nhanh)) khong hoc ma hoi ca nhan van*.