There are many synonyms for the phrase "stems from", which is often used to describe the root cause or origin of something. Some possibilities include "derives from", "emanates from", "springs from", "arises from", "originates from", "comes from", and "is rooted in". These various alternatives can help add variety and interest to your writing while conveying the same basic meaning. Depending on the context, different synonyms may be more appropriate or effective at capturing the nuances of a particular situation or idea. Experimenting with different options can help you find the perfect phrasing for your particular needs.