Perhaps you should try some spelling variations:
pham thuong » phan thuong, pham hong
thuong hoc » truong hoc, tuong hoc, thuong ho
mach hoc » cach hoc, dich hoc, anh hoc
cuu dong » cuu cong, cuu tong, cuu long
dong hoc » dong co, dong luc
hoc pham » hoc phan, hoc phat, hoc phap
dai khoi » dai hoi, dai khoa, mai khoi
nhan dan » phan dau, nhan tai
gian dan » gian lang
te mach » ke mach, te sach, tim mach
hoc dai » hoc dan
khoi va » hoi va, khi va, choi va

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

• Performing a fuzzy search may retrieve terms with similar spellings: te mach hoc tap, nghien cuu dong hoc pham thuong hoc dai khoi va ((nhan dan) OR (gian dan))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te mach hoc tap, nghien cuu dong hoc pham thuong hoc dai khoi va ((nhan dan) OR (gian dan))".
• Adding a wildcard symbol may retrieve word variants: te mach hoc tap, nghien cuu dong hoc pham thuong hoc dai khoi va ((nhan dan) OR (gian dan))*.