[fix] skip non-string result url/title/content
[fix] skip non-string result url/title/content

misnyo/searx,dalf/searx,misnyo/searx,dalf/searx,asciimoo/searx,asciimoo/searx,asciimoo/searx,asciimoo/searx,misnyo/searx,dalf/searx,jcherqui/searx,jcherqui/searx,dalf/searx,jcherqui/searx,misnyo/searx,jcherqui/searx