WorldCat

For World Cat I used the Advanced Search Option and decided to ONLY search for the term Attention Deficit Hyperactivity Disorder. I used the Boolean OR to separate my different forms of the term. I entered in both controlled and natural language terms. My search terms were Attention Deficit Hyperactivity Disorder OR ADHD OR Hyperkinetic Disorder (old term for ADHD). I also limited my search to English results within the time frame of 2010-2018. 

My search retrieved 1,397 total result but I am looking for mainly articles for my search and I noticed that in the top bar they have an option to limit to a specific type of result.
 
I look to where it says Articles and notice that out of the 1,397 results only 241 of them are articles so I click on it.
 
This gives me a more reasonable amount of results to search through and by putting in my specific facet all 241 of these results should contain information about Attention Deficit Hyperactivity Disorder in some context.


Looking through the results I found one that interested my right away. Result number 51 titled Cognitive Training for attention-deficit/hyperactivity disorder: meta-analysis for clinical and neuropsychological outcomes from randomized controlled trials. 



Using WorldCat and boolean operator OR helped to narrow my search down greatly. I also found that their limiters at the top of the page that let me select what type of results I was looking for (Articles) helped to narrow even further and also made it easier to find what I needed due to only seeing article results instead of having to sift through over a thousand results that contained other document types.

In the end I found a great article that covered my topic exactly (ADHD, therapy, children) and it didn't take a long time.