The default search term operator is AND
You can use brackets, AND OR and NOT to improve your search. For example: C# AND NOT ( VB or SQL )
A query of a single * will return everything, filtered by any filters.
Search by Author: author:"author name"
Filter by tag: tag:C# or tag:(C++ or Java)
Wildcard search use: "?" or "*" eg. gr?d or gr*
Take a look at the Network Panel in the Chrome Developer Tools and some of the features it has to offer.
The Network Panel displays information about the resources that the browser downloads for a web page. For each resource, the information displayed includes the HTTP verb, status code, the type of file, size of the resource, and the amount of time it took to load the resource. This video shows some of the features of the Network Panel and demonstrates how to use it.