Perhaps you should try some spelling variations:
nhanh khang » nhanh thang, nhanh quang, nhanh thanh
khang thuoc » khong thuoc, dang thuoc, hanh thuoc
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
thuoc xa » thuoc ma, thuoc va, thuoc la
te sach » toc sach
va nhan » van nhan, ca nhan, va phan
va phap » va phat, ban phap

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach hoc tap, nghien cuu cong hoc nhanh khang thuoc xa hoi ((va nhan) or (va phap)) van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach hoc tap, nghien cuu cong hoc nhanh khang thuoc xa hoi ((va nhan) OR (va phap)) van.
• Adding a wildcard symbol may retrieve word variants: te sach hoc tap, nghien cuu cong hoc nhanh khang thuoc xa hoi ((va nhan) or (va phap)) van*.