The key to getting more impressions and clicks is to expand your keyword list with extremely relevant long-tail keywords, improve your Quality Scores by writing compelling ad text, and then raise your bids to get your ads in the top position for maximum clicks.
A great tool to use to expand your keyword list can be found in the AdWords Editor. It’s called the Keyword Opportunities Tool
Next, try the Display Network. Create separate campaigns for each of the following targeting methods: keywords, interest categories, topics, placements, and remarketing.
Use the Auction Insights report to analyze your bidding strategy in the auctions, ad the Search Terms report for honing your targeting methods.
This is just a partial list of things you can do to boost your impressions and clicks. This link will go into these and other ideas:
https://support.google.com/adwords/answer/3416396?hl=en
