Perhaps you should try some spelling variations:
nhanh khoa » nhan khoa, nganh khoa, hang khoa
hoa nhanh » hoc nhanh, hoa thanh, hoa khanh
sach hoc » cach hoc, sach hoi, mach hoc
khoa hoc » hoa hoc
tinh van » trinh van, dinh van, tinh va
su sach » so sach, vu sach
ma hoi » mai hoi, ma hoa, me hoi

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach hoc tap, nghien cuu van hoa nhanh khoa hoc ((ma hoi) OR (xa hoi)) may tinh van~".
• Adding a wildcard symbol may retrieve word variants: su sach hoc tap, nghien cuu van hoa nhanh khoa hoc ((ma hoi) OR (xa hoi)) may tinh van*.