Perhaps you should try some spelling variations:
attack resistance » attack resistant, crack resistance, contact resistance
attack resilient » attack resistant
definition april » definition api, definition spring, definition a.i
april 1883 » april 1823, april 1833, april 1813
east » fast, easy

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: east india ((attack resistance) OR (attack resilient)) definition april 1883.
• Adding a wildcard symbol may retrieve word variants: east india ((attack resistance) or (attack resilient)) definition april 1883*.