Perhaps you should try some spelling variations:
nganh duong » nganh cong, nhanh dong, anh duong
duong hoc » dung hoc, duong hoi, duong ho
sach hoc » cach hoc, sach hoi, mach hoc
dong hoc » dong luc
su sach » so sach, vu sach
va luan » vay luan, van luan, va quan
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 ((dong hoc) or (dong co)) nganh duong hoc xa hoi va luan van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach hoc tap, nghien cuu ((dong hoc) OR (dong co)) nganh duong hoc xa hoi va luan van.
• Adding a wildcard symbol may retrieve word variants: su sach hoc tap, nghien cuu ((dong hoc) or (dong co)) nganh duong hoc xa hoi va luan van*.