Perhaps you should try some spelling variations:
nhan khong » nhan thong, nhanh chong, nganh khong
nganh nong » nganh cong
sach hoc » cach hoc, sach hoi, mach hoc
cuu dong » cuu cong, cuu tong, cuu long
dong luc » nang luc
nhan dan » phan dau, gian dan, nhan tai
te sach » toc sach
va nhan » van nhan, ca nhan, va phan
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: te sach hoc tap, nghien cuu dong luc ((nhan khong) or (nganh nong)) hoc ma hoi va nhan dan~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach hoc tap, nghien cuu dong luc ((nhan khong) OR (nganh nong)) hoc ma hoi va nhan dan.
• Adding a wildcard symbol may retrieve word variants: te sach hoc tap, nghien cuu dong luc ((nhan khong) or (nganh nong)) hoc ma hoi va nhan dan*.