Perhaps you should try some spelling variations:
doanh khoa » toan khoa
goc doanh » hoa doanh, voi doanh, von doanh
sach hoc » cach hoc, sach hoi, mach hoc
khoa hoc » hoa hoc
te sach » toc sach
hoc tai » hoc dai, hoc tap, hoc bai
va luan » vay luan, van luan, va 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: te sach hoc tai, ((nguyen huu) OR (nguyen duc)) mot goc doanh khoa hoc xa hoi va luan van~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach hoc tai, ((nguyen huu) OR (nguyen duc)) mot goc doanh khoa hoc xa hoi va luan van".
• Adding a wildcard symbol may retrieve word variants: te sach hoc tai, ((nguyen huu) OR (nguyen duc)) mot goc doanh khoa hoc xa hoi va luan van*.