Yes, there is. You can use search using the following:

    <keyword> user:me is:a

This will search for answers (`is:a` = is an answer) by you that contain the word `<keyword>`. If you want to search for all posts by you (answers and questions), just remove the `is:a` part.

Here's an example of looking for the word `local` in posts by me:

 ![][1]

You can pretty much use this for everything else in the search. For instance, you can use it to search for questions of a specific tag by you using `[tag] user:me`. This will display all questions/answers by you on questions that were tagged with `tag`.

  [1]: https://i.sstatic.net/Knyq3.png