If you post the names of these coins maybe someone can help you out more. Besides the links posted by the above members should be a good first choice to start your search. If the coins are not found on the data aggregator sites then chances are that the project died out and there was not market to cater too or got delisted.

As far as I remember, majority of coins in 2013 - 2014 were mineable coins that were starting to gain popularity as bitcoin mining was becoming more negative ROI predominant. Most of those coins still exist but the market is not that good to even start mining them.