Perhaps you should try some spelling variations:
nhan luoc » nhan luc, nhan cuoc, nhan duoc
thu sach » tu sach, thuat sach, thuoc sach
va trien » va truyen, va thiet, va tuyen
va triet » va thiet, ve triet, cua triet
luoc van » luoc can, luoc va, luc van
van hanh » van thanh, ban hanh, van anh
qua nhan » cua nhan, qua nhat, qua phan
sach ky » sac ky, sach y, sach ty
su tien » su kien, su hien, tu tieng
nang o » nang co, nang ho, nang ro
o hoi » co hoi, o hoc, o hai

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 ky nang o hoi. hieu qua nhan luoc van hanh vi ((((va triet) or (va trien))) or (su tien))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ky nang o hoi. hieu qua nhan luoc van hanh vi ((((va triet) OR (va trien))) OR (su tien)).
• Adding a wildcard symbol may retrieve word variants: thu sach ky nang o hoi. hieu qua nhan luoc van hanh vi ((((va triet) or (va trien))) or (su tien))*.