I had stool exam, the results showed rare yeast cells, what does that means? Had no diabetes, but have hemorrhoids.

Minimal. Yeast are a normal inhabitant of our colon and can be seen on stool examinations. Like bacteria, some yeast take up residence there and live for years, enjoying undigested matter. They can, on occasion, cause an issue- but if you are fine then leave them alone and let them enjoy life in the warm confines of your bowel.