MySQL并非所有结果都显示出来

i have made i small membersearch for my site that looks for first name oder second name in my database. all members are inserted by the same way but i get not always a result back. if no member with a typed name is found than i get a message. that seams to work, but some times i get no message or if there are more than one results i get not all of them. here is my code i use.i have made i small membersearch for my site th