I understand that size limit for searches is very necessary. However, when looking for thread discussing a specific resort (i.e CBR, POR etc) I couldn't search effectively. Is there a way of allowing specific short "words" on the searches? If so, would you consider doing it for a subset of ride resort etc common abbreviations for Disney?

Easy way around this. Just put a * at the end of your three letter word. * acts as a wildcard character, so it searches for anything that starts with the three letters.