Perhaps you should try some spelling variations:
nhanh khoa » nhan khoa, nganh khoa, hang khoa
hoc nhanh » hoc nganh, hoc phan
sach hoi » sach doi, sach moi, cach thoi
cuu cong » cua cong, thu cong, cac cong
cong hoc » dong hoc, cong hoa, cong coc
khoa hoc » hoa hoc
lang tai » lang thai, tang tai, sang tai
hang tai » hang va, dung tai
so sach » so sanh, bo sach, co sach
hoc xa » hoc ma

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 hoi dap, nghien cuu cong hoc nhanh khoa hoc xa hoi va ((lang tai) or (hang tai))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach hoi dap, nghien cuu cong hoc nhanh khoa hoc xa hoi va ((lang tai) OR (hang tai)).
• Adding a wildcard symbol may retrieve word variants: so sach hoi dap, nghien cuu cong hoc nhanh khoa hoc xa hoi va ((lang tai) or (hang tai))*.