I If this happens, there is almost always an easy solution. If you go to the Bing and search your keywords regularly it could be as easy as clearing your cookies and/or cache. http://www.wikihow.com/Clear-Your-Browser’s-Cache Other times you may be typing in similar keywords, but it is not “exact.” Other times you may have your settings wrong, i.e. language or location settings. Remember, if your placement is regional it will only be shown regionally. If it is only supposed to appear in the U.S., it will not appear if you are searching while outside the U.S. If you notice for any period of time (1 business day or longer) your ad not appearing, please contact your account adviser immediately to begin troubleshooting.