problems in fixing normal map seams

Being stucking in fixing seams for a week now, so frustrated
tried the tricks found in online tutorials to smooth out wonky edges in alpha R and G but never seemed working. Result even worse.


this is my normal map, the blank area are for the character's clothings.



and my color map,



these are the close shot of the problem area, in fact, the place has seam, there is a problem.