(Search for all unread emails labeled facebook inside inbox.)2. Example: in:anywhere from:peter
(Search for all emails regardless where it’s stored (spam, inbox, trash) received from anyone with the name Peter.)3. Example: is:unread after:2010/06/01 before:2010/07/01
(Search for all unread mails for the month of June. )4. Example: from: peter@emailadress.com has:attachment
(Return all emails with attachments sent by peter@emailadress.com)5. Example: in:inbox "meeting"
(Search inbox for any emails with the keyword "meeting" in it.)6. Example: from:peter@emailaddress.com has:attachment filename:zip
(Return only emails received from peter@emailaddress.com with .zip attachments.)7. Example: "facebook" -from:@facebookmail.com
(Return all emails with the keyword "facebook", excluding those sent by facebook.com)8. Example: to:peter OR cc:peter
(Return all emails sent to or carbon copied Peter.)9. Example: label:google OR from:@google.com
(Return all emails received from google.com or labeled "google".)10. Example: "meeting" is:chat
(Return all chat log files with keyword "meeting" in it.)
Read more: Gmail Advanced Search - Ultimate Guide http://www.hongkiat.com/blog/gmail-advanced-search-ultimate-guide/