Perhaps you should try some spelling variations:
nghien cua » nghien cuu, nghiep cua, nghiep vua
nganh khoa » nganh hoa, nganh khong, doanh khoa
hoc nganh » hoc nhanh
thu sach » tu sach, thuat sach, thuoc sach
sach hoi » sach doi, sach moi, cach thoi
phan tan » phan van, phan tap, phan lan
hoi tap » hoi dap, hoc tap, hoi tai
ban hoc » bang hoc, van hoc, bai hoc
va phan » van phan, va phat, va phap

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach hoi tap, nghien cua ban hoc nganh khoa ((hoc xa) OR (hoc ma)) hoi va phan tan~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach hoi tap, nghien cua ban hoc nganh khoa ((hoc xa) OR (hoc ma)) hoi va phan tan".
• Adding a wildcard symbol may retrieve word variants: thu sach hoi tap, nghien cua ban hoc nganh khoa ((hoc xa) OR (hoc ma)) hoi va phan tan*.