Perhaps you should try some spelling variations:
nghien cac » nghiep cach, nghien cuu, nghiep cay
coc nganh » hoc nganh, cac nganh, chuc nganh
thong hoa » thong khoa, thong ha, thong hoc
chung hoc » trung hoc, dung hoc, hung hoa
sach hoc » cach hoc, sach hoi, mach hoc
cac cong » cua cong
cong coc » cong cuoc, cong cac, cong co
dan phan » doan phan, dan chan, van phan
su sach » so sach, vu sach
hoi dan » hoa dan, hoc dan, hoi dap
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 hoa) or (chung hoc)) xa hoi dan 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 hoa) OR (chung hoc)) xa hoi dan phan va.
• Adding a wildcard symbol may retrieve word variants: su sach hoc tap, nghien cac cong coc nganh ((thong hoa) or (chung hoc)) xa hoi dan phan va*.