Using multiple search operators for Best Results
Assuming you have read the other three articles on operations (quotes, plus and minus), you can now focus on combining them into a power cocktail.
If you put a plus in front of a quoted phrase, you are telling the search engine to only include results that contain the phrase. Now if all you are searching for is the phrase, then including the plus is unnecessary, but as soon as you add another word or phrase, you then should add the plus or minus.
you can string many words into a long search where some are quoted phrases, some other words or phrases having Plus or minus in front.
It is not uncommon to go from millions of results, to hundreds after adding some phrases and +/- operators to reduce your results.
Example
You are looking for a Marx Brothers video called A Day at The Races
Without any operators, you say
A Day At the Races and get 18 million matches.
adding quotes
"A Day At the Races" gets a 10X reduction 1.6 million matches.
Now, By building a full blown quote and plus string
+"a day at the races" +"marx brothers" +"vhs" +"for sale" +NJ +princeton
ends with 110 results.
Now you can look through a reasonable list of search results and tweak your query based on what you see to either see ore or less, or from what you learn while seeing the results, either add keywords, or phrases, or change searching strategy