Perhaps you should try some spelling variations:
nhan luoc » nhan luc, nhan cuoc, nhan duoc
luoc van » luoc can, luoc va, luc van
van hanh » van thanh, ban hanh, van anh
su triet » su viet, su tien, ve triet
va nhan » van nhan, ca nhan, va phan
tu cai » tu cac, tu bai, tu cay
tu can » tu ban, tu cac, thu canh

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu cai) OR (tu can)) ky nang x ho. lieu va nhan luoc van hanh vi ((va thiet) or (su triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu cai) OR (tu can)) ky nang x ho. lieu va nhan luoc van hanh vi ((va thiet) OR (su triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu cai) OR (tu can)) ky nang x ho. lieu va nhan luoc van hanh vi ((va thiet) or (su triet))".
• Adding a wildcard symbol may retrieve word variants: ((tu cai) OR (tu can)) ky nang x ho. lieu va nhan luoc van hanh vi ((va thiet) or (su triet))*.