If you're running into trouble with your search, this 3-minute video from the Centre for Evidence-Based Medicine is helpful:
Once you have your terms, try to broaden or limit your search.
Use a set of quotation marks (" ") around phrases such as “cerebral palsy" to prevent Google or other search engines from inserting an 'AND' between the terms.
Truncate search terms with an asterisk (*) to increase the number of results.
Limit your search by domains to increase the chances of retrieving pertinent results, i.e. site:rehab, site:gov, site:cms.
Below are filtered resources, or resources that have appraised the quality of studies and often make recommendations for practice.
Below are sources of unfiltered resources, which are primary sources or original research studies. Consider using critical appraisal worksheets to evaluate the studies.