How to recover lost contacts after sync of gmail account? after restore still missing some contacts

[AC Question]

I had a large Phonebook on my android device by using Sim & Phone contacts. Also sync them to my gmail account but i don't know why all of them are not synced with my android account? May be some important contacts are placed on phone only. Unfortunately may be i have Clear Data of Phonebook from Applications (of/from Settings). After that i Synced/Restore contacts again from gmail account but alas i am undone! I have lost some of my important contacts, may be they were stored in phone memory but not synced with gmail account. I am badly in need of that previous Phonebook. Is there any way to recover that? Is there any who can let me know how can i get those?