Perhaps you should try some spelling variations:
nghien cua » nghien cuu, nghiep cua, nghiep vua
cua dong » chua dong, cua cong, cua dang
dong hoa » dong hoc, dong co
dan khoa » dang khoa, da khoa, san khoa
khoa hoc » hoa hoc
te hinh » te chinh, thep hinh, thi hinh
te tinh » tue tinh, tre tinh, ve tinh
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 hinh) OR (te tinh)) hoc tap, nghien cua dong hoa dan khoa hoc xa hoi va luan van~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te hinh) OR (te tinh)) hoc tap, nghien cua dong hoa dan khoa hoc xa hoi va luan van".
• Adding a wildcard symbol may retrieve word variants: ((te hinh) OR (te tinh)) hoc tap, nghien cua dong hoa dan khoa hoc xa hoi va luan van*.