Perhaps you should try some spelling variations:
silvery hair » silver hair, silver chair, silver hath
hair disease » hair diseases, chain disease, ear disease
pain disease » pain diseases, main disease, brain disease
silver pain » silver rain, silver pin, silver stain

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: (( silvery hair disease ) OR ( silver pain disease )).
• Adding a wildcard symbol may retrieve word variants: (( silvery hair disease ) or ( silver pain disease ))*.