Dean,
Putting double quotes around a phrase always works for me. I think it's safe to say that it always works. That is how it is designed to work.
Just to be clear, by "double quotes", that means the special double-quote character. One before and one after. It does not mean two single-quote characters in a row. Two single-quotes might look to our eyes like double-quotes, but they are not.
Don't bother with single quotes, with a + or & between words, or anything else. Just put the double quotes around the phrase. That's all. Nothing else will do what you want.
Regards,
Andy