Some of my phone contacts stopped showing up on Google contacts?!?

[AC Question]

All of my contacts came to the phone from Google contacts. Now for some reason some of the contacts don't show up on Google contacts and the phone search also doesn't find them. I found some of the contacts in a manual search.
Any solution for that?
thanks for your help.

 

[sohailgagai]

Check sync

Learning to take photographs in M mode, confuse with Aperture / Shutter speed / ISO.
Don't have a clue yet lol !!!
Have Nikon D3100 & 18-55 lense