Perhaps you should try some spelling variations:
nghien cac » nghiep cach, nghien cuu, nghiep cay
nganh khoa » nganh hoa, nganh khong, doanh khoa
thanh phan » thanh pho, thanh san, thanh toan
hoc nganh » hoc nhanh
thanh van » thanh san, thanh toan, thanh nhan
mach hoc » cach hoc, dich hoc, anh hoc
cac cong » cua cong
cong hoc » dong hoc, cong hoa, cong coc
khoa hoc » hoa hoc
bo mach » bo sach, ban mach, bo trach
hap ban » lap ban, hap dan, nhat ban
hoc xa » hoc ma
xa hap » xa hai

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

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