Perhaps you should try some spelling variations:
nghien thu » nghiem thuc, nghiep thuc, nghien cuu
nhanh hung » thanh hung, nhanh hong, nhanh chuong
hoc nhanh » hoc nganh, hoc phan
ban thanh » ban hanh, ban hang
thanh van » thanh san, thanh toan, thanh phan
mach hoc » cach hoc, dich hoc, anh hoc
cong hoc » dong hoc, cong hoa, cong coc
hung hoc » chung hoc, khung hoc, nhung hoc
doi ban » di ban, do ban, dong ban
hoc xa » hoc ma
xa doi » xoa doi, xa hoi, xa dai

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

• Performing a fuzzy search may retrieve terms with similar spellings: (tim or time) mach hoc tap, nghien thu cong hoc nhanh hung hoc xa doi ban thanh van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (tim OR time) mach hoc tap, nghien thu cong hoc nhanh hung hoc xa doi ban thanh van.
• Adding a wildcard symbol may retrieve word variants: (tim or time) mach hoc tap, nghien thu cong hoc nhanh hung hoc xa doi ban thanh van*.