Perhaps you should try some spelling variations:
phan phuong » phan thuong, han phuong, phap phuong
phuong hoc » phuong hoa, thuong hoc, phuong thuc
mach hoc » cach hoc, dich hoc, anh hoc
hoc phan » hoc dan, hoc pho
cao phan » co phan, cho phan, cac phan
phan van » pham van, thanh van, luan van
tu mach » tu cach, tu manh, tu hach
mo hoc » mon hoc, co hoc
ma hoi » mai hoi, xa hoi, me hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu mach hoc tap, nghien cuu mo hoc phan phuong hoc ((ma hoi) or (ma hoa)) cao phan van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu mach hoc tap, nghien cuu mo hoc phan phuong hoc ((ma hoi) OR (ma hoa)) cao phan van.
• Adding a wildcard symbol may retrieve word variants: tu mach hoc tap, nghien cuu mo hoc phan phuong hoc ((ma hoi) or (ma hoa)) cao phan van*.