I see lots of good advice posted on your question so I won't continue in that line of thought.
However, if you want reliable accurate data on local homes for sale in your (and mine) area here in the Mt.Vernon/Evansville area then simply go to http://www.buyhomesnow.com. There you can access the real estate in our local area.
This site is the consumer site for the local Realtor MLS and the data there will be much more accurate.
Hope this makes your search easier for you.
Great question that has stimulated even more great questions.
Your question...does Trulia have all MLS listing?
Absolutely NOT! Let me explain.
Aggregate websites like Trulia and Zillow TAKE agent listing and change the data. They mask who the listing agent is and POST along side the home for sale a fabricated ZESTIMATE. Many home seller find this offending. Many agent find this predatory. Buyer should find what they see on aggregate websites a deliberate deception of the public.
In order to regain control of where a home owner listing appears and to maintain the integrity of the data, many home sellers are encouraged to not advertise their home on the internet.
Before everyone goes balistic, lets understand, real, qualified buyers are using the MLS. Placing a home in the MLS will distrubute that homes data to HUNDREDS of big websites who have agreed to a minimum level of service and integrity. The participation sites have aggreed to standards such as posting data recieved from the MLS without substitutions. to update status no less than every 24 hours and which data fees have priority.
So, when I say, "NO INTERNET" it means restricting distibution to reliable sources where the REAL SERIOUS buyers are searching and have an expectation of timely, reliable, accurate, comprehensive real estate data.
Also, be aware, there are four levels of buyers to whom real estate professional will present a home BEFORE it reaches the MLS. In a market of low inventory, being in one of the first four groups means you see the good stuff FIRST! Some find real value in working with a professional who have these networks.Those outside the network see home sold with one of fewer days on market.
It was recently announced that Realtor.com will be accepting DIY sales. That does not seem to align with a National Association of Realtors mission.
As Ron pointed out, aggregate websites are great for intertainment, but if you are facing a real estate decision, the are the least reliable source on the planet...well with the exception of the neighbor down the street who offer unsolicited real estate advise based on this flipping experience from 1986.
Patty, I hope I made the situation more clear. Based on your need and expectation, you know what you must do. Serious buyers do what serious people do. They rely on those who are professionals that actually DO what is required dozens of times every year.