Perhaps you should try some spelling variations:
phan thong » phan thuong, phan hong, phan tong
thong hoc » thuong hoc, tuong hoc, thong hoa
mach hoc » cach hoc, anh hoc, bac hoc
dich hoc » sinh hoc, hinh hoc, tinh hoc
hoc phan » hoc dan, hoc pho
dan phan » doan phan, dan chan, van phan
phan van » pham van, thanh van, luan van
hoi dan » hoa dan, hoc dan, hoi dap
cuu co » huu co, cua co, cuu mo
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: thu ((mach hoc) or (dich hoc)) tap, nghien cuu co hoc phan thong hoc xa hoi dan phan van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu ((mach hoc) OR (dich hoc)) tap, nghien cuu co hoc phan thong hoc xa hoi dan phan van.
• Adding a wildcard symbol may retrieve word variants: thu ((mach hoc) or (dich hoc)) tap, nghien cuu co hoc phan thong hoc xa hoi dan phan van*.