Does OLLYDBG have a memory search function? For example searching for a value in a game, then switching back to the game and changing the value and then searching for the new value...etc until I get the address of the value I want? (kinda like TSearch)

You can search the segments of a loaded process for a specific value if that's what your looking for. You'd have to write down the memory addresses manually however each time as there's no built-in "game cheat system" as such.