Single word keywords against 2 or 3 word keywords for SEO
 

Looking in Google Web designer devices for my site, the 6th most usual keyword is "life". This appears a whole lot because I point out "artificial life" and in places "2nd life" in the page text. I wish to enhance the importance of this page in terms of the keywords in the text, not as just "life" by itself, which as you could see, is far to unclear to be of use.

Exactly how can I raise the ranking of "artificial life" as a keyword rather of simply "life" on my website?

2 or 3 word keywords is the best in SEO.

if you are using more than one word it may help the Google to crawl more results...