Perhaps you should try some spelling variations:
nghien cac » nghiep cach, nghien cuu, nghiep cay
nganh khoa » nganh hoa, nganh khong, doanh khoa
coc nganh » hoc nganh, cac nganh, chuc nganh
cac cong » cua cong
cong coc » cong cuoc, cong cac, cong co
khoa hoc » hoa hoc
phan van » pham van, thanh van, luan van
quan van » luan van, quan va, quan luan
song ho » dong ho, song vo, cong ho
hoi cap » hoi dap, hoi cac, hoi cau
ho tap » hoc tap, ho hap, ho tai
hoc xa » hoc ma

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

• If you are trying to use Boolean operators, they must be ALL CAPS: thuat song ho tap, nghien cac cong coc nganh khoa hoc xa hoi cap ((phan van) OR (quan van))~.
• Adding a wildcard symbol may retrieve word variants: thuat song ho tap, nghien cac cong coc nganh khoa hoc xa hoi cap ((phan van) or (quan van))*.