I have been lifting more at the gym, increased my protein intake, keep my calories in check but I am not seeing the results. My goal is to seem more definition especially in my abs.

How long ago did you start lifting more and added in the extra protein? It could take a few weeks for you to start seeing the results.

Also did you up your ab workouts as well? < not going to effect your body fat loss but once it is lost will make everything look better.

Good luck!

What routine are you following? It needs to be "progressive strength training" to develop. If you're doing really high rep low weights, you'll turn it into a cardio session which isn't helpful.

As far as greater definition, for short term thing (photo shoots, a day at the beach, ect...) you might look into water restriction type diets, these will reduce water retention in the body and show definition well. but this is not a long term type solution.

Beyond that sounds likely that you just need to keep doing what your doing, maybe go on a maintance diet for a week or two, then drop back into a slight deficit maintaining your current activity level.

Also not sure if you have done this aready, but make sure to check out other sources for basial metabolic rates based on body fat persentage. I personally set myself on a sedentary diet, and add in all extra workout calories. otherwise the settings may actually be highter then you are actually burning, expecially if you do add in exercise calories on top of the activity level calories, making it appear like you can have more then you should be having.

These tips are more for if you are on a plateau that you cant seem to break. Hope this is of help.