Perhaps you should try some spelling variations:
nghien thu » nghiem thuc, nghiep thuc, nghien cuu
thu luong » thu huong, thu tuong, phu luong
luong hoa » luong khoa, luong hoai, luong ha
hoa thanh » hoan thanh, ha thanh, hoc thanh
sach hoc » cach hoc, sach hoi, mach hoc
cong hoc » dong hoc, cong hoa, cong coc
lau luan » lap luan, khau luan, thau luan
dau luan » dan luan, dat luan, khau luan
tu sach » thu sach, su sach, te sach
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 thu luong hoa thanh cong hoc xa hoi ((lau luan) OR (dau luan)) van~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach hoc tap, nghien thu luong hoa thanh cong hoc xa hoi ((lau luan) OR (dau luan)) van".
• Adding a wildcard symbol may retrieve word variants: tu sach hoc tap, nghien thu luong hoa thanh cong hoc xa hoi ((lau luan) OR (dau luan)) van*.