Perhaps you should try some spelling variations:
nhan tuong » nhan trong, nhan thong, nhan tong
tuong hoc » truong hoc, tuong ho, duong hoc
sach doi » sach moi, sach dao, sach bai
sach hoi » sach moi, cach thoi, hoach hoi
cuu tong » cuu cong, cuu tinh, huu tung
tong luc » dong luc, tong cuc, truong luc
luc nhan » luc nhat, cu nhan, tue nhan
cua nhan » ca nhan, cua ngan, cua nha
nhan tao » nhan tai, nhan dan
hoi cua » hoi chuc
ma hoi » mai hoi, xa hoi, ma hoa

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 doi) or (sach hoi)) tap, nghien cuu tong luc nhan tuong hoc ma hoi cua nhan tao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach doi) OR (sach hoi)) tap, nghien cuu tong luc nhan tuong hoc ma hoi cua nhan tao.
• Adding a wildcard symbol may retrieve word variants: tu ((sach doi) or (sach hoi)) tap, nghien cuu tong luc nhan tuong hoc ma hoi cua nhan tao*.