How to select objects within other objects correctly?

I have a hard time selecting objects.
I made a video: https://youtu.be/C4p29XfJkMI

I need to select the dots - but if I don't click exactly on the dot then the surrounding line is beeing selected.

Is there an easier way to select the dots?

(other things I tried:
- I can mark the holes by starting outside of the object which should not be selected but then I will select other objects which should not be selected.
- I need to replace the colour. I already used the replace function in corel... but the colour of these dots will not beeing changed by corel. (the other lines are working fine)

Thanks!

Roelli.