Perhaps you should try some spelling variations:
doanh khoa » toan khoa
dich hoc » sinh hoc, hinh hoc, kinh hoc
tinh hoc » sinh hoc, tin hoc, hinh hoc
cuu cong » cua cong, thu cong, cac cong
co doanh » cho doanh, cao doanh, so doanh
khoa hoc » hoa hoc
cong co » dong co, cong cu, cong so
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: tu ((dich hoc) OR (tinh hoc)) tap, nghien cuu cong co doanh khoa hoc xa hoi va luan van~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((dich hoc) OR (tinh hoc)) tap, nghien cuu cong co doanh khoa hoc xa hoi va luan van".
• Adding a wildcard symbol may retrieve word variants: tu ((dich hoc) OR (tinh hoc)) tap, nghien cuu cong co doanh khoa hoc xa hoi va luan van*.