Perhaps you should try some spelling variations:
nganh khong » nganh cong, nhanh chong, nganh nong
doanh khoa » toan khoa
sach hoi » sach doi, sach moi, cach thoi
cuu cong » cua cong, thu cong, cac cong
cong hoa » dong hoa, dong hoc, hang hoa
quan van » luan van, quan va, quan luan
tu sach » thu sach, su sach, te sach
va quan » van quan, tac quan, hai quan
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 trac, nghien cuu cong hoa ((nganh khong) or (doanh khoa)) hoc xa hoi va quan van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach hoi trac, nghien cuu cong hoa ((nganh khong) OR (doanh khoa)) hoc xa hoi va quan van.
• Adding a wildcard symbol may retrieve word variants: tu sach hoi trac, nghien cuu cong hoa ((nganh khong) or (doanh khoa)) hoc xa hoi va quan van*.