Perhaps you should try some spelling variations:
doanh khoa » toan khoa
hoa doanh » toan doanh, hoa dan
doan phan » doanh phan, toan phan, dan phan
tinh hoc » sinh hoc, hinh hoc, trinh hoa
cuu cong » cua cong, thu cong, cac cong
cong hoa » dong hoa, dong hoc, hang hoa
khoa hoc » hoa hoc
hoc doan » hoc dan, hoc dai, hoc phan
phan van » pham van, thanh van, luan van
tin hoc » sinh hoc
hoc mon » hoc moi, hoc mot, hoc cong
mon hoc » toan hoc, dong hoc

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu ((tinh hoc) OR (tin hoc)) tap, nghien cuu cong hoa doanh khoa hoc mon hoc doan phan van~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((tinh hoc) OR (tin hoc)) tap, nghien cuu cong hoa doanh khoa hoc mon hoc doan phan van".
• Adding a wildcard symbol may retrieve word variants: tu ((tinh hoc) OR (tin hoc)) tap, nghien cuu cong hoa doanh khoa hoc mon hoc doan phan van*.