Supposedly, the quoted phrase "green widgets" should only be triggered by that exact phrase while the keyword phrase 'green widgets' without quotes should be triggered by any search with the words "green" or "widgets."
If that is the case, then the unquoted phrase 'green widgets would get the same results as if ‘green’ and ‘widgets’ were each on separate lines.
Is that so?
Green widgets (without quotes) will aprear for all those just listed and for keyword phrases like, "widgets for green people", "blue widgets and green sprockets ", etc. The phrase must have both words but it doesn't matter what order or where the words appear.
If you would like your your ad to appear only when someone types in "green widgets" exactly, you must put brackets [green widgets]around the keyword phrase.
"blue widgets" China
"blue widgets" France
It spits put to you that you cannot use double punctuation or someting like that.
Your only choice is the unquoted version. allowing the above examples would help in targeting a lot.