Perhaps you should try some spelling variations:
dan chong » dan phong, van chuong, dan phuong
chong hoc » chung hoc, chong doc, thong hoc
mach hoc » dich hoc, anh hoc, bac hoc
cach hoc » cach thuc, cach thoi, dich hoc
cuu dong » cuu cong, cuu tong, cuu long
dong hoc » dong co, dong luc
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: toc ((mach hoc) or (cach hoc)) tap, nghien cuu dong hoc dan chong hoc xa hoi va luan van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc ((mach hoc) OR (cach hoc)) tap, nghien cuu dong hoc dan chong hoc xa hoi va luan van.
• Adding a wildcard symbol may retrieve word variants: toc ((mach hoc) or (cach hoc)) tap, nghien cuu dong hoc dan chong hoc xa hoi va luan van*.