Just the other day, Google turned off the + operator. There was a bit of a kerfuffle about it in a few blogs, and Danny Sullivan got bent out of shape about it, but relatively few people noticed that the behavior of the double-quote operator also changed at the same time.
Search for these terms in THIS given order on the web page (using double-double quotes):
Does this help you understand the new power of double-quotes? Yes, the + operator is gone, but what we now have makes a bit more sense.
Here's the deal: LOTS of people believed incorrectly that the + operator was the opposite of the - operator. You know what – does, it excludes the term from the search results. That is, if you do a search like [apples –macintosh] the results will not contain the term macintosh in the results. That makes sense. (Some places use the NOT operator for this. Same behavior.)
Unfortunately, many people believed that a search like [apples +macintosh] would require the term to be in the search results. That's NOT what it did. While the + term would usually be in the results, it was only there because you'd put it into the query!
So what did the + do? Answer: It turned off synonymization and spell-correction. That is, with a query like [apples +macintosh] you wouldn't get that term macintosh being synonymized for a term like gala, gravenstein or jonathan. (Those are other apple varieties, if you're wondering.)
NOW... we no longer have the + operator. So what can you do if you want the same effect?
Answer: Use double-quotes for single terms. You'd write that query now as [apples "macintosh"], and it'll give you the same effect as what the plus used to do.
Some people complain that it's an extra character to type. Geez. Give me a break--you're going to complain about 1 extra character?
The double-quote mechanism is actually pretty interesting. For instance, did you know you can do the following kinds of a query?
[ intitle:"abc" ] finds “ABC” in title of a web document, no synonyms allowed
[ intitle:a intitle:b intitle:c ] finds the single letters A, B, C in any order in title
And you can use double/double-quotes to look for non-synonymized terms in a particular sequence. A la,
[ " "abc" "cnn" "cbs" " ] finds those 3 terms in that sequence without synonyms
and you can extend that to include
[" intitle:"a" intitle:"b" intitle:"c" "] finds the single letters A, B, C in title of page,
in that sequence
in that sequence
Search for these terms in ANY order in the title of a web page:
Search for these terms in THIS given order on the web page (using double-double quotes):
Contrast with this result, where the 3 terms can appear in any sequence...
Does this help you understand the new power of double-quotes? Yes, the + operator is gone, but what we now have makes a bit more sense.