Use the Ads Diagnostic Tool in your AdWords account to find out why your ad may not be showing for a certain search query. You can check the status of your ad by entering the search terms and parameters defined in your account, or by entering the URL for the search results page on which your ad should be displayed.
You can also access Ads Diagnostic Tool results on the Keywords tab within your Campaigns tab. Hover over the speech bubble icon in the Status column to see more information about your keyword.
Use the Ads Diagnostic Tool now 
to find out if your ad is appearing in search results.
