Stop wasting time wading through hundreds of hits: refine your text searches using regex, as supported by many Mac apps.
Different search and filter tools have different purposes – as demonstrated by exploring the log using Consolation 3. Regex at work!
More details of what a Safari 9 content blocker can use in terms of available triggers and actions.
Save yourself the tedium, using Finder, NameChanger, Automator, Better Rename, or Perl.
Regular Expressions turn search terms into a programming language. Are they just for Unix wizards?