Perhaps you should try some spelling variations:
nghien thu » nghiem thuc, nghiep thuc, nghien cuu
thu tuong » tu tuong, thu huong, thuy duong
tuong hoa » tuong khoa, tuong ho, huong hoa
hoa khanh » hoa thanh, hoa phan, hoa hinh
phong hoc » phong ho, thong hoc, phuong hoa
thu sach » tu sach, thuat sach, thuoc sach
lau luan » dau luan, lap luan, khau luan
hoi tap » hoc tap, hoi tai, hai tap
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: thu sach ((hoi tap) or (hoi dap)), nghien thu tuong hoa khanh phong hoc xa hoi lau luan van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ((hoi tap) OR (hoi dap)), nghien thu tuong hoa khanh phong hoc xa hoi lau luan van.
• Adding a wildcard symbol may retrieve word variants: thu sach ((hoi tap) or (hoi dap)), nghien thu tuong hoa khanh phong hoc xa hoi lau luan van*.