You can find and select features in your map based on their location or properties. You create an expression that specifies a set of conditions to use for finding and selecting the features.
For example, you can find just the roads in Shanghai within a circular area you specify. Specify criteria that limit the results to road features that lie within the circle you define and whose City field is "Shanghai."
You can search multiple layers from different data sources, as long as they share the property you are searching. For example, you can have an SDF layer of parcels, a SHP layer of parks, and an Oracle layer of hospitals. If they all share a STREET_NAME property, you can search by street name.