Perhaps you should try some spelling variations:
nganh khung » nganh khong
nghien thu » nghiem thuc, nghiep thuc, nghien cuu
nhanh hung » thanh hung, nhanh hong, nhanh chuong
sach hoi » sach doi, sach moi, cach thoi
nhan van » nhan dan, nhan va, phan van
tu sach » thu sach, su sach, te sach
hoi tap » hoi dap, hoc tap, hoi tai
cong co » dong co, cong cu, cong so
va nhan » van nhan, ca nhan, va phan
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 tap, nghien thu cong co ((nganh khung) OR (nhanh hung)) hoc xa hoi va nhan van~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach hoi tap, nghien thu cong co ((nganh khung) OR (nhanh hung)) hoc xa hoi va nhan van".
• Adding a wildcard symbol may retrieve word variants: tu sach hoi tap, nghien thu cong co ((nganh khung) OR (nhanh hung)) hoc xa hoi va nhan van*.