Cheat Engine Stringpointer problem

Hey.

I want to find some things in a game like name, hp, mp, ep and so on.
I can find this addresses as string.
Now, i make a pointerscan for this address, and restart the game.
But then, there comes my problem.
All the pointer, which was working before restart, are now like hieroglyphics or "??".
No one is working.
I tried to scan with max level 2, than 5, but there are only 10000 shown in the list.
How can i research in this huge pointerlist? I can only search float, 4 bytes and double.
Could you please help me?

Than you realy much! :)
Regards, René