Perhaps you should try some spelling variations:
nhanh nhung » hanh nhung, nhanh hung, nhanh chuong
hoc nhanh » hoc nganh, hoc phan
sach hoc » cach hoc, sach hoi, mach hoc
nhan tai » hang tai, van tai, toan tai
tu sach » thu sach, su sach, te sach
duoc xa » duoc ma, duoc va, uoc xa
duoc ha » duoc ma, duc ha, duoc va
cuu co » huu co, cua co, cuu mo
hoi ca » hoi cua, hoi cac, hoi cau

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 hoc tap, nghien cuu co hoc nhanh nhung ((duoc xa) or (duoc ha)) hoi ca nhan tai~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach hoc tap, nghien cuu co hoc nhanh nhung ((duoc xa) OR (duoc ha)) hoi ca nhan tai.
• Adding a wildcard symbol may retrieve word variants: tu sach hoc tap, nghien cuu co hoc nhanh nhung ((duoc xa) or (duoc ha)) hoi ca nhan tai*.