Perhaps you should try some spelling variations:
nganh khong » nganh cong, nhanh chong, nganh nong
thanh phan » thanh pho, thanh san, thanh toan
cuu thong » cuu thuong, cuu tong, cuu chong
thong hoc » thuong hoc, tuong hoc, thong hoa
hoc nganh » hoc nhanh
khong hoc » khung hoc, khong thuoc, khong chuc
sach hoi » sach moi, cach thoi, hoach hoi
sach doi » sach moi, sach dao, sach bai
va thanh » gia thanh, ban thanh, va tinh
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 ((sach hoi) or (sach doi)) dap, nghien cuu thong hoc nganh khong hoc xa hoi va thanh phan~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach hoi) OR (sach doi)) dap, nghien cuu thong hoc nganh khong hoc xa hoi va thanh phan.
• Adding a wildcard symbol may retrieve word variants: tu ((sach hoi) or (sach doi)) dap, nghien cuu thong hoc nganh khong hoc xa hoi va thanh phan*.