I'm not sure how big this area is but: 1- If you've hunted those 3 stands every day for 3 weeks they may just be burnt. If any dominant buck use your area.....probably at night. 2- I'd definatly work ove the area to the SE near the big swamp. If nobody else is bothering them, don't be afraid to hunt or checkout fairly close to the south row of houses.

Keep trying!

Good Luck!