Databases found on the EBSCOhost or ProQuest platforms will allow you to set the search interface to your preferred language. (The default is English.)
EBSCOhost:
ProQuest:
Depending on the topic you are thinking of writing about, you may want to explore some of the Libraries' more specialized research databases. You can browse lists of databases by subject area.
If your topic is multidisciplinary, meaning it might fall into a few areas (education, psychology, etc...) you may want to search several databases, or, you may want to search using a broader search tool, like Library Search, or Google Scholar.