Perhaps you should try some spelling variations:
hoc nhanh » hoc nganh, hoc phan
sach hoc » cach hoc, sach hoi, mach hoc
cuu cong » cua cong, thu cong, cac cong
cong hoc » dong hoc, cong hoa, cong coc
nhan tao » nhan tai, nhan dan
tu sach » thu sach, su sach, te sach
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: tu sach hoc tap, nghien cuu cong hoc nhanh ((khoa hoc) or (hoa hoc)) xa hoi ca nhan tao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach hoc tap, nghien cuu cong hoc nhanh ((khoa hoc) OR (hoa hoc)) xa hoi ca nhan tao.
• Adding a wildcard symbol may retrieve word variants: tu sach hoc tap, nghien cuu cong hoc nhanh ((khoa hoc) or (hoa hoc)) xa hoi ca nhan tao*.