BlackBerry :: Cannot Get The Number To Come Up When Start Typing In The First Or The Last Name

I have a lot of contacts stored that can't be found with the search field. Even though I can see a name on the list of contacts,when I type in that persons name in the search box, I get nothing. What am I missing? The same is true when I go to call someone. I know that the contact is in my list. But I cannot get the number to come up when I start typing in the first or the last name.