Perhaps you should try some spelling variations:
nghien thu » nghiem thuc, nghiep thuc, nghien cuu
nganh cong » nhanh chong
van thanh » ban thanh, van tuan
thanh van » thanh san, thanh toan, thanh phan
mach hoc » cach hoc, dich hoc, anh hoc
cong hoc » dong hoc, cong hoa, cong coc
tu mach » tu cach, tu manh, tu hach
hoi van » hoi va, hoi dan, hai van
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: tu mach hoc tap, nghien thu cong hoc ((nganh cong) or (thanh cong)) hoc xa hoi van thanh van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu mach hoc tap, nghien thu cong hoc ((nganh cong) OR (thanh cong)) hoc xa hoi van thanh van.
• Adding a wildcard symbol may retrieve word variants: tu mach hoc tap, nghien thu cong hoc ((nganh cong) or (thanh cong)) hoc xa hoi van thanh van*.