Perhaps you should try some spelling variations:
nhanh nhung » hanh nhung, nhanh hung, nhanh chuong
hoc nhanh » hoc nganh, hoc phan
nhung goc » nhung cuoc, nhung gi, nhung bo
sach hoc » cach hoc, mach hoc, sach duoc
sach hoi » sach doi, sach moi, cach thoi
cuu mon » cuu mo, cuu mot, cuu cong
mon hoc » toan hoc, dong hoc
va nhan » van nhan, ca nhan, va phan
nhan va » nhan tai, nhan dan, nhan tao
goc xa » hoc xa, goc va, uoc xa

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