Perhaps you should try some spelling variations:
nhanh khong » nhanh chong, nganh khong, nhan khong
khong thuoc » khang thuoc, hong phuoc, dong thuoc
hoc nhanh » hoc nganh, hoc phan
sach doi » sach moi, sach dao, sach bai
sach hoi » sach moi, cach thoi, hoach hoi
cuu dong » cuu cong, cuu tong, cuu long
dong hoc » dong co, dong luc
thuoc xa » thuoc ma, thuoc va, thuoc la
nhan dan » phan dau, gian dan, nhan tai
va nhan » van nhan, ca nhan, va phan

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 doi) OR (sach hoi)) tap, nghien cuu dong hoc nhanh khong thuoc xa hoi va nhan dan~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach doi) OR (sach hoi)) tap, nghien cuu dong hoc nhanh khong thuoc xa hoi va nhan dan".
• Adding a wildcard symbol may retrieve word variants: te ((sach doi) OR (sach hoi)) tap, nghien cuu dong hoc nhanh khong thuoc xa hoi va nhan dan*.