Perhaps you should try some spelling variations:
nganh khoa » nganh hoa, nganh khong, doanh khoa
hoc nganh » hoc nhanh
sach doi » sach hoi, sach moi, sach bai
sach dao » lanh dao
khoa hoc » hoa hoc
cac luan » cac luat, sach luan, cac dan
hoi cac » hoc cac, voi cac, hoa cac
mo hoc » mon hoc, co hoc
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 doi) OR (sach dao)) tap, nghien cuu mo hoc nganh khoa hoc xa hoi cac luan van~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach doi) OR (sach dao)) tap, nghien cuu mo hoc nganh khoa hoc xa hoi cac luan van".
• Adding a wildcard symbol may retrieve word variants: tu ((sach doi) OR (sach dao)) tap, nghien cuu mo hoc nganh khoa hoc xa hoi cac luan van*.