swamp cooler in hallway, how to get the rest of my mobile home cool?

[grateful]

Hello, this is my first summer in a mobile home with a swamp cooler and I'm having trouble getting my home cool, except for the hallway which is where the vent is. That part is really cold. I do have my windows on the opposite sides of he the home cracked open. What can I do to get the air circulating in the entire place? My home is only 876 square feet so it is not that big. Thank you!