Perhaps you should try some spelling variations:
nghien huu » nghien cuu, nguyen huu, nhiem huu
hoc nganh » hoc nhanh
chau phan » cau phan, chau nhan, chau phong
sach hoc » cach hoc, sach hoi, mach hoc
huu dung » huu tung, huu quang, thuy dung
dung hoc » dung thuoc, trung hoc, dung khoa
cong hoc » cong hoa, cong coc, cong ho
dong hoc » dong co, dong luc
hoi chau » hoi chu, hoi cham, hai chau
phan van » pham van, thanh van, luan van
tu sach » thu sach, su sach, te sach

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach hoc tap, nghien huu dung hoc nganh ((cong hoc) OR (dong hoc)) xa hoi chau phan van~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach hoc tap, nghien huu dung hoc nganh ((cong hoc) OR (dong hoc)) xa hoi chau phan van".
• Adding a wildcard symbol may retrieve word variants: tu sach hoc tap, nghien huu dung hoc nganh ((cong hoc) OR (dong hoc)) xa hoi chau phan van*.