| Operator | Description |
|---|
| digital photography | containing both "digital" and "photography". |
| "ice hockey" | containing the exact phrase "ice hockey". |
| iphone
OR
droid | containing either "iphone" or "droid" (or both). |
| Iceland
-volcano | containing "Iceland" but not "volcano". |
| #ted | containing the hashtag "ted". |
| from:marthastewart | sent from person "marthastewart". |
| @nasa | referencing person "nasa". |
| site:techcrunch.com | containing links within techcrunch.com. |