Perhaps you should try some spelling variations:
doanh khoa » toan khoa
hoc doanh » hoa doanh, hoc danh, hoc dan
hinh hoc » sinh hoc, tin hoc, benh hoc
cuu tong » cuu cong, cuu tinh, huu tung
tong hoc » tuong hoc, thong hoc, trong hoc
khoa hoc » hoa hoc
nhan tai » hang tai, van tai
toan tai » toan tap, doanh tai, toan ban
te hinh » te chinh, te tinh, thep hinh
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 hinh hoc tap, nghien cuu tong hoc doanh khoa hoc xa hoi va ((nhan tai) OR (toan tai))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te hinh hoc tap, nghien cuu tong hoc doanh khoa hoc xa hoi va ((nhan tai) OR (toan tai))".
• Adding a wildcard symbol may retrieve word variants: te hinh hoc tap, nghien cuu tong hoc doanh khoa hoc xa hoi va ((nhan tai) OR (toan tai))*.