actually "آن قدر ها هم" is one phrase. It's meaning is something like the meaning of "that" before adjectives in English. For example "آن قدرها هم کوچک نیست" means "It's not that small".

The complete sentence was that: آن قدر ها هم (که فکر می کردم) کوچولو نیست آن قدرها هم is an expression and it likes the structure " as adjective as" in English grammar. So the whole sentence meaning is "he is not as small as I thought". Example: آن قدرها هم قدرتمند نبود : He was not as powerful as I supposed. خانه اش آن قدرها هم دور نبود: His home was not as far as I thought.

آن : that قدر : amount or quantity ها : it has not a particular definition in English but it indicates plural . Like the letter "s" that indicates plural in English. هم : (hard to translate) :((