[1]search_patternHow I search for something I can't find. I drew
  up that map on the left to answer a question. Basically, you go
  as far as you can, then stop. Then you find the biggest gap you
  can and go to the middle of that gap. Then you stop and look
  around. Then you go across the first line you made to the NEXT
  biggest gap you see. And stop. And look around. Keep repeating,
  always looking for the biggest gap you never looked at that's as
  far away as you can easily get to. Eventually, you'll find what
  you're looking for. [and usually, it's right NEXT to the place
  you started from tongue emoticon ] (or hiding in the far corner
  you *thought* you searched in already]

References

  Visible links
  1. http://icopiedyou.com/wp-content/uploads/2015/03/search_pattern.png