Using Twitter's advanced search function provides you with a powerful tool to cut through the millions of tweets being sent every day to find exactly what you are looking for. To start, click the gear icon on a search results page and choose "Advanced search." Under the "Words" heading, search for specific words, phrases, or hashtags, or exclude words you don't want to appear in results. You can also specify a language to search for tweets in. Type in Twitter usernames in any field of the "People" section to get tweets from, to, or about specific users. Note that you don't need to add an @ symbol or commas between usernames. If you'd like to find tweets from a certain place, click into the "Near this place" field and type in a location. In the "Other" section, choose whether you want to include positive tweets, negative tweets, or tweets that ask questions. You can also choose whether you want your search results to include retweets as well. Click "Search" to see your results.