Perhaps you should try some spelling variations:
nghien thu » nghiem thuc, nghiep thuc, nghien cuu
time mach » tim mach, tinh mach
hoc nhanh » hoc nganh
ban thanh » ban hanh, ban hang
thanh van » thanh san, thanh toan, thanh phan
mach hoc » cach hoc, dich hoc, anh hoc
hoc phan » hoc dan, hoc pho
hung hoc » chung hoc, khung hoc, nhung hoc
hoi ban » hoi dan, hoi bai, doi ban
hoc xa » hoc ma

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

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