SPH:
Excellent, RodG! Don't understand the terms, though,
Hmm, OK, I see an explanation is in order :)
Firstly the the purpose of the quotes around "Wurldbitzer Debibulator" and "Lain led and fact none" is to tell Google that you are looking an exact phrase (or in this case, 2 exact phrases). This prevents Google from displaying listings that contain "Wurldbitzer" without "Debibulator" or "Debibulator" without "Wurldbitzer".
This one isn't particularly important, but the other one "Lain led and fact none" is very important. Without the quotes Google will display millions of pages that contain any** one** of those words.
The + signs in front of the two phrases is telling Google that the pages displayed must contain both phrases. Without the + signs it will display pages that contain "Wurldbitzer Debibulator" OR "Lain led and fact none"
The phrase "Wurldbitzer Debibulator" as you already know, is 'unique' to our test product.
The phrase "Lain led and fact none" was something I selected pretty much at random from our 'gibberish' description. I figured that this particular phrase isn't likely to be found on any other website.
Putting all this together means that Google will only find our test sites where the description hasn't been changed to remove "Lain led and fact none".
As I said I selected this pretty much at random, but any 'unique' phrase (from the gibberish description) will achieve the same results.
As a side note, if you use the - sign instead of the plus sign, that is telling Google to only show the pages that don't contain the phrase that follows it. This can be very useful if you perform a search and wish to narrow the results returned... For example
+"Wurldbitzer Debibulator" -"New Products" will cause Google to display all pages with "Wurldbitzer Debibulator" but it will exclude those 'ancillary links' that are a result of WB being listed as a 'New product'.
You don't need to use 'phrases' for this, single words will work in the same way. Phrases just tend to be a lot more 'unique' than single words.
Oh, FWIW, this isn't just a 'Google' thing either. All of the different SE's have the same (or similar) syntax (not to mention many other programs/applications). It is an 'unofficial syntax' that has been around for as long as I can remember.
SPH:
Way more advanced than I
Not any longer :)
There are a lot of other similar 'tricks', but not all supported by all SE's. Most of the others I don't use, but the +- "phrase" syntax is something I could never live without... it is a very powerful method of boring down into the SE listings to find exactly what I'm looking for. It is rare time that I'll use Google and click on links to pages that don't contain what I'm searching for. Practice and play with it. You'll never know how you did without it either.
Cheers
Rod