In the upper left-hand corner, right under the RefShare banner, you will notice a Search option that when you click on it gives you a drop down menu choice for Lookup by Author, Descriptor or Periodical and also an “advanced” option. I’ve highlighted the drop down menu in the screen shot below with a yellow box and an arrow pointing to it.
Choosing the Lookup by Descriptor option brings you to the following screen:
I’ve selected “aboriginal peoples” from the array (obviously the capitalization of descriptors is rather haphazard).
Choosing “Energy efficiency” gives the following list of titles:
There are many more very valuable features to this database, which I will leave it to you to explore and discover!