Save the time of manually combining keywords by multiplying two or more lists of keywords. Then, get historical statistics or traffic forecasts for the new list of combined keywords.
Let's say you're advertising a chain of luxury resorts. You might have one keyword list of geographical locations and a second list of keywords that describe your resorts as follows:
Keyword list 1
Keyword list 2
We'll combine the keywords from both lists to create new keyword phrases, like "Cabo hotels" or "Mexico luxury resort". Then, you can get traffic forecasts or historical statistics for these new keywords.