Perhaps you should try some spelling variations:
nang thuong » hang thuong, nang truong, dang thuong
thuong hoc » truong hoc, tuong hoc, thuong ho
sach hoc » cach hoc, sach hoi, mach hoc
hoc nang » hoc bang, hoc tang, hoc hang
nhan dan » phan dau, gian dan, nhan tai
su sach » so sach, vu sach
mo hoc » mon hoc, co hoc
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: su sach hoc tap, nghien cuu mo hoc nang thuong hoc xa hoi va ((pham van) or (nhan dan))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach hoc tap, nghien cuu mo hoc nang thuong hoc xa hoi va ((pham van) OR (nhan dan)).
• Adding a wildcard symbol may retrieve word variants: su sach hoc tap, nghien cuu mo hoc nang thuong hoc xa hoi va ((pham van) or (nhan dan))*.