Perhaps you should try some spelling variations:
nganh thuong » anh thuong, doanh thuong, nang thuong
thuong hoc » truong hoc, tuong hoc, thuong ho
luc nganh » luc ngan, chuc nganh, luat nganh
sach hoi » sach doi, sach moi, cach thoi
sach bai » sach dao, cac bai, sach xa
cuu dong » cuu cong, cuu tong, cuu long
dong luc » nang luc
van nhan » van phan, van thanh, danh nhan
nhan tao » nhan tai, nhan dan
hoc mai » hoc ma, hoc dai, hoc bai
mai hoi » mai khoi, dai hoi, lai hoi
hoi van » hoi va, hoi dan, hai van

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 hoi) or (sach bai)) tap, nghien cuu dong luc nganh thuong hoc mai hoi van nhan tao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach hoi) OR (sach bai)) tap, nghien cuu dong luc nganh thuong hoc mai hoi van nhan tao.
• Adding a wildcard symbol may retrieve word variants: tu ((sach hoi) or (sach bai)) tap, nghien cuu dong luc nganh thuong hoc mai hoi van nhan tao*.