Help! Lars Anderson - passage after 1900

Hi! I've recently started researching my grandmother's norwegian heritage. Her parents were both from Norway and came to Canada "sometime in the early 1900's." Unfortunately, we don't know much more than that! I'm looking for any help/guidance in order to find out more about them and when they arrived, what ship they were on etc. Here's the information I know: Lars Anderson, married to Anna. Travelled from Norway to Canada in the early 1900's. I don't know their dates of birth or marriage - I only know their names at this point. They eventually settled in Manitoba, Canada. I do not have exact dates of their travel or from which port they left or arrived from. HELP!