Kirro, you might want to do a workout routine that emphasizes those smaller areas, yet still exercises all the muscle groups.
For Chest
Start with
Right side bench presses w/dumbbell and/or machines, and cables.
Work that side for several sets alone. Then in your last set or two bring in the other hand and do a few lighter presses.
Use a cable crossover machine. Work the flyes and crossovers only on the one side. Then do a set or two with both.
Use Pec Dek machine. Work flyes only right side. Then do only a few sets with both.
Flyes and Presses. Use dumbbells and cables, and machines.
Start with right side, do all exercises. Vary grips and positions.
High pulley, mid pulley, low pulley. SO try several angles. Focus on contracting all the way into inner pec.
That way you get the mind/muscle connection going.
With Biceps
Use a preacher curl bench/machine and only work the right side.
Then after youve completed all sets, bring in the other one for a few light sets.
Concentration curls only right side.
Spider Curls with flat side of Preacher Bench only right side.
Triceps
Use Rope, V grip, C grip, and only do right side Tricep push downs. Use Dummbells for Tricep Kick Backs. Use dumbbells for overhead Extension.
After completing all exercises , do a few light sets with both.
Do a few light sets of Cambered Bar Close Grip Bench Presses.
Back.
Bent over single arm dumbbell Rows. Seated Rows with C handle.
Try various grips and positions. Use dumbbells, and cables.
After completing all sets, do a few light sets with both arms.
There is some evidence of a certain training protocol that seems to help with a little more pump, fullness, and size but not really increasing strength.
Pick a weight that you can do for no more than 15 reps. A weight you cannot get to a 16th rep or more.
From there do 5 sets where you perform the exercise but stop at the 10th rep, even though you can do more.
At the 6th set complete the set to 15, if you can.
So you might want to try that rep scheme with say a one sided, perhaps machine based (single arm with dumbbell on bench can be tough, so machines and cables might be easier to work unilaterally, but still try to include some free weight on benches) where you do each exercise (flat press, incline press, decline press, flat flye, incline flye, decline flyes, etc) with that rep scheme. Now you dont want to do several exercises where youre doing like 6 sets of ONE exercise too much.
So pick one, no more than two major muscle group exercises where you choose to do that rep scheme, and then rest of the exercise routines you stick to your regular rep scheme (preferably 10-12 reps per set, no more , and then maybe a final high rep pump set).
Good luck.