"Targeted Keywords" are usually competitive terms. What if you club more contextual keywords, terms(long-tails), questions.and create valuable content around it.
Same time, based on same subject you can make and embed some cool Powerpoint PPT(Slideshare), infographics (Pinterest) on same page.
Ensure download time, Typography and overall elegance.
This is what you are targeting audiences and not keywords. Keywords are means. Its ok to analyze search volumes of keywords (I bet they always are approximate, non-accurate and fluctuating)
Serve "intent" of the search not "Search Terms"
Regards,