Mac Mini 2013 and Samsung UE32F4000 32 inches tv resolution problem
Your TV has native resolution 1366x768 on 32", so it si normal it all looks big. This resolution is used on notebooks with 11-15" screens with elements size purposed for these small displays.

When you enforce full HD (1920x1080), your TV will recalculate received data from your computer (1920x1080) to native resolution (1366x768), so elements retain their size as for full HD, but look bad (they are not native, just calculated, reduced for less resolution).  Although it is not visible on your screenshot, but I believe that view is wrong.

Use smaller display with 1366x768, or native full HD display (will be still too big on 32", i think).