Perhaps you should try some spelling variations:
nghien cac » nghiep cach, nghien cuu, nghiep cay
coc nganh » hoc nganh, cac nganh, chuc nganh
thong hoc » thuong hoc, tuong hoc, thong hoa
khung hoc » chung hoc, nhung hoc, thuong hoc
sach hoc » cach hoc, sach hoi, mach hoc
cac cong » cua cong
cong coc » cong cuoc, cong cac, cong co
su sach » so sach, vu sach
va phan » van phan, va phat, va phap
phan va » phan van, nhan va, han va

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach hoc tap, nghien cac cong coc nganh ((thong hoc) or (khung hoc)) xa hoi va phan va~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach hoc tap, nghien cac cong coc nganh ((thong hoc) OR (khung hoc)) xa hoi va phan va.
• Adding a wildcard symbol may retrieve word variants: su sach hoc tap, nghien cac cong coc nganh ((thong hoc) or (khung hoc)) xa hoi va phan va*.