Perhaps you should try some spelling variations:
nghien huu » nghien cuu, nguyen huu, nhiem huu
nganh cong » nhanh chong, thanh cong
sach hoc » cach hoc, sach hoi, mach hoc
dong hoc » dong co, dong luc
cong hoc » cong hoa, cong coc, cong ho
cau luan » cu luan, dau luan, lau luan
tu sach » thu sach, su sach, te sach
mon hoc » toan hoc
hoi cau » hoi chu, hoc cau, hoa cau
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: tu sach hoc tap, nghien huu ((mon hoc) OR (dong hoc)) nganh cong hoc xa hoi cau luan van~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach hoc tap, nghien huu ((mon hoc) OR (dong hoc)) nganh cong hoc xa hoi cau luan van".
• Adding a wildcard symbol may retrieve word variants: tu sach hoc tap, nghien huu ((mon hoc) OR (dong hoc)) nganh cong hoc xa hoi cau luan van*.