It looks like no one has responded to your question. Here are a couple things that might help others answer:
- What account were the contacts associated with? Gmail, Yahoo, iCloud, etc., or were they only found on your iPhone?
- What troubleshooting have you already tried? (Restarting your phone, closing the contacts app, etc)
- Are all of your contacts missing, or only some of them? (You said "I can't find all my contact") If only some, how many are missing?