It depends! What are your definitions of "conservatively" and "good hand" and "couple of chips"? And how long had you been playing at this game, allowing your opponents to develop an impression of your play?
First, you can't make any generalizations based on this single hand. The fact that you got dealt AA doesn't entitle you to win a big pot. It could well be that you played your hand just fine and nobody else happened to have a hand with which to challenge your opening raise. It happens sometimes. You just have to sigh and smile as the dealer pushes the blinds your way.
But, maybe it's a pattern. Based on your description of your opponents' reaction to your bet, it sounds like you might be playing in a nitty way where you are waiting for premium starting hands. If this is true, and your opponents know it's true, then your best course of action is to selectively widen your opening hand ranges. If, for example, you're opening with things like:
88+, ATs+, KJs+, AQo+
That's only about 7% of hands. If your opponents have seen you playing for a while, perceive your tight play, and have seen you show a few premium hands at showdown, they are going to be noticeably reluctant to enter one of the few pots when you open. You can take advantage of this reputation by open raising with a wider range of hands, particularly in later position. Exactly how best to do this isn't so clear, since it depends on so many different factors: opponent tendencies, stack sizes, your absolute position, your position relative to other key players in the hand, etc. Getting the most out of your position is something that distinguishes elite players from the rest of us, and it's a learning process that gives a little boost each time you learn more.
In general, tight play can often win at lower limit cash games like typical live $1-$2 games and against certain player types, but you can do better. Do some searching on the web for articles on how your hand selection should vary with position, and learn how to mix it up a little at a time. I stress that you should do it a little at a time, because it's easy to get lost when you try to play a lot more hands without the skills to back it up.
An excellent book that describes benefits of position and other common concerns in modern smaller no-limit cash games is Ed Miller's Small Stakes No-Limit Hold 'Em. IMO, you can't go wrong with this or any of Ed Miller's other books.