Mike Rasmussen has came up with some good boolean strings for searching on WordPress sites.
For instance the other day I was hunting for some specific folks for an ETL engineering role that had business intelligence experience. I came up with an X-Ray string:
site:wordpress.com (inurl:resume OR intitle:resume OR intitle:ETL OR inurl:ETL OR intitle:BusinessIntelligence OR inurl:Businessintelligence) ETL (“business intelligence” OR BI) -jobs
This simple string yielded some relevant results as you can see on the SourceCon blog.