Through the Basic Search, you can look for occurrences according to its name or to a metadata value. By default, it will parse Only Names but you can decide to parse Names + Metadata from the glass located at the right of the basic search.
You can as well decide to launch a Case Sensitive search if you want to be more precise.
Last searches done
The basic search keep in memory the searches made previously and let you run them again. It also list all your search queries you've made in your Advanced Search in order to let you run them directly.
Here at start when importing my model.
Basic Search Result
The Basic Search is much more longer than the Advanced Search since it'll make sure to display in your Product Structure ONLY the result occurrences + their parents in order to let you localize them.