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, mach hoc, sach duoc
sach hoi » sach doi, sach moi, cach thoi
cong hoc » dong hoc, cong hoa, cong coc
lau luan » dau luan, lap luan, khau luan
hoi lau » hoi cau, hoi luu, hoi lang
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) OR (sach hoi)) tap, nghien thu luong hoa thanh cong hoc xa hoi lau luan van~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach hoc) OR (sach hoi)) tap, nghien thu luong hoa thanh cong hoc xa hoi lau luan van".
• Adding a wildcard symbol may retrieve word variants: tu ((sach hoc) OR (sach hoi)) tap, nghien thu luong hoa thanh cong hoc xa hoi lau luan van*.