Why aren't my saved contacts showing up in search on Lumia 630?

[Windows Central Question]

Saved contact not searched in Lumia 630

I am using Nokia Lumia 630 since last 7 months without any issue. Now I have observed that since last 10 days or so, the contacts i save on phone are stored on the People list on web, but not shown on my phone when i search them. Altough that no. is displayed when i get incoming call from that no. Pl HELP!!!