I'm fully aware of how to phrase search terms and gave "Resolution" as a simple example. However, no matter how simple or sophisticated the arrangement of keywords is, in my experience on this site, the results are very non-specific. I have not waded through a whole set of results but I get the impression that many do not contain any reference to the search terms I have used. I may be wrong about that as I have never checked carefully but I made this query because it seems to me that the search facility does not work well.
Thanks for the positive suggestion from ajgreeny. I will try that.