Before you start your search, keep in mind that over the years various names have been used to refer to Indigenous Peoples in Canada and other Indigenous groups around the world.
As a result, any of the following terms could be used in your search:
In addition to these terms, Indigenous Peoples are often identified by colonially-imposed names for specific nations (i.e. Iroquois, Huron), linguistic or cultural groups (i.e. Athapascan "Indians", Plains "Indians"), or by their traditional names (i.e. Anishinaabe, Haudenosaunee). For tips on how to combine different search terms, look at the Indigenous Language Revitalization: Finding Indigenous Language Materials guide.
Scholars writing on Indigenous issues will often choose the terminology they use thoughtfully, and may explain their choices in a footnote.
For more detail as to best practices, the following links contain useful explanations: