Perhaps you should try some spelling variations:
khanh phuong » khanh phong, thanh phuong, khanh phung
phuong hoa » huong hoa, phuong hoang, hung hoa
hoc khanh » hoc nhanh, hoc thanh, hoc hanh
luan phan » luan van, luan hoan
sach hoc » cach hoc, sach hoi, mach hoc
hoi luan » hoa luan, hoc luan, khoa luan
phan van » pham van, thanh van, luan van
su sach » so sach, vu sach

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) or (cua cong)) hoc khanh phuong hoa xa hoi luan phan van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach hoc tap, nghien ((cuu mo) OR (cua cong)) hoc khanh phuong hoa xa hoi luan phan van.
• Adding a wildcard symbol may retrieve word variants: su sach hoc tap, nghien ((cuu mo) or (cua cong)) hoc khanh phuong hoa xa hoi luan phan van*.