Perhaps you should try some spelling variations:
nhanh khoa » nhan khoa, nganh khoa, hang khoa
hoc nhanh » hoc nganh, hoc phan
trinh van » trinh han, trinh quan, trinh toan
sach hoc » cach hoc, sach hoi, mach hoc
khoa hoc » hoa hoc
tinh van » dinh van, tinh va, tich van
so sach » so sanh, bo sach, co sach
van hoc » van hoa
ma hoi » mai hoi, xa hoi, ma hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach hoc tap, nghien cuu van hoc nhanh khoa hoc ma hoi va ((tinh van) or (trinh van))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach hoc tap, nghien cuu van hoc nhanh khoa hoc ma hoi va ((tinh van) OR (trinh van)).
• Adding a wildcard symbol may retrieve word variants: so sach hoc tap, nghien cuu van hoc nhanh khoa hoc ma hoi va ((tinh van) or (trinh van))*.