Perhaps you should try some spelling variations:
nganh khong » nganh cong, nhanh chong, nganh nong
khong thuoc » khang thuoc, hong phuoc, dong thuoc
luc nganh » luc ngan, chuc nganh, luat nganh
sach hoc » cach hoc, sach hoi, mach hoc
cuu dong » cuu cong, cuu tong, cuu long
dong luc » nang luc
thuoc la » thuoc ma, thuoc va, thuoc tai
nhan dan » phan dau, gian dan, nhan tai
phan van » pham van, thanh van, luan van
su sach » so sach, vu sach
la hoi » lai hoi, xa hoi, le hoi

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach hoc tap, nghien cuu dong luc nganh khong thuoc la hoi va ((nhan dan) OR (phan van))~".
• Adding a wildcard symbol may retrieve word variants: su sach hoc tap, nghien cuu dong luc nganh khong thuoc la hoi va ((nhan dan) OR (phan van))*.