If you're looking for search syntax and terminology see our article on advanced search.
This article describes how to sift through results from a search to find just the data you need and how to find related data. If you need help with basic search techniques, see How to find data resources.
When you run a search you might get just the result you are looking for on the top of the results list. More often you might need to sort through it a bit to get your nugget of gold. One quick way to narrow down your search results is to search by resource type. The resource types are grouped logically by their use in a work phase, rather than by their resource types. The idea is that people are either looking for raw data, analysis, definitions or people so we make the first big filtering happen at that level. My search on 'sales' returned 1127 results. That's obviously too many to go through one at a time so let's see how we can reduce that number. Selecting the All resource types dropdown reveals that 415 of the results are datasets, 592 are projects and analysis, 65 are terms in a business glossary, and 55 are people and organizations:
Since the goal of my search is to find data I can use in my project on quarterly sales numbers, I select data and get the following:
Using facets to restrict results
Filtering on resource types is a good start on restricting the data returned by a search, but I can get my results list even smaller if I use the facets on the left sidebar. Facets, as the name implies, deal with the features or characteristics of a set of data. The default facet types are owner and tag, with status and customizable fields available to enterprise users. Selecting a facet immediately changes the search results and the other facets available with no need to refresh your screen:
Once you have a manageable result set of data the next step is to qualify the results for your purpose. See our article Evaluating data in search results for more information.