Perhaps you should try some spelling variations:
nhanh khoa » nhan khoa, nganh khoa, hang khoa
hoc nhanh » hoc nganh
sach hoi » sach doi, sach moi, cach thoi
cuu dong » cuu cong, cuu tong, cuu long
dong hoc » dong co, dong luc
khoa hoc » hoa hoc
hoc hanh » hoc thanh, hoc anh, thuc hanh
hoc phan » hoc dan, hoc pho
tu sach » thu sach, su sach, te sach
hoi tai » hoc tai, hoi trac
nhan va » nhan tai, nhan dan, nhan tao

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach hoi tai, nghien cuu dong hoc nhanh khoa hoc va ((hoc hanh) or (hoc phan)) nhan va~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach hoi tai, nghien cuu dong hoc nhanh khoa hoc va ((hoc hanh) OR (hoc phan)) nhan va.
• Adding a wildcard symbol may retrieve word variants: tu sach hoi tai, nghien cuu dong hoc nhanh khoa hoc va ((hoc hanh) or (hoc phan)) nhan va*.