Unapproved Keywords
AdWords also reviews and approves your keywords. Google AdWords does usa phone number list not allow advertising products and sites related to firearms, drugs, cigarettes, pornography, alcohol, fireworks, and more. Like ad approvals, you can check keyword approvals in the interface by clicking the Keywords tab and checking the status column for the ad in question.
Negative Keywords
Adding negative keywords to your campaigns is a good idea to block unwanted traffic, but you need to be careful, especially when using negative broad match. It can be a good idea to review your negative keyword list to make sure they aren’t crowding out your positive keywords.

Your keyword bids may be too high for your daily budget. For example, if a keyword's max CPC is set to $3 and your daily budget is only $10, Google will definitely not display your ads for that keyword. If this is the case, you can simply keep your bids lower and/or increase your daily budget.