Perhaps you should try some spelling variations:
nhanh khong » nganh khong, nhan khong, nhanh hong
nhanh chong » thanh cong, khanh phong
thuoc dai » thuoc tai, thuoc dac, thuoc sai
dan thanh » dang thanh, danh thanh, ban thanh
thanh van » thanh san, thanh toan, thanh phan
mach hoc » cach hoc, dich hoc, anh hoc
tu mach » tu cach, tu manh, tu hach
mo hoc » mon hoc, co hoc

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu mach hoc tap, nghien cuu mo hoc ((nhanh khong) or (nhanh chong)) thuoc dai hoc dan thanh van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu mach hoc tap, nghien cuu mo hoc ((nhanh khong) OR (nhanh chong)) thuoc dai hoc dan thanh van.
• Adding a wildcard symbol may retrieve word variants: tu mach hoc tap, nghien cuu mo hoc ((nhanh khong) or (nhanh chong)) thuoc dai hoc dan thanh van*.