Perhaps you should try some spelling variations:
"lawrence b. de gran" » "lawrence _. de gran", "lawrence j. de gran", "lawrence h. de gran"
"lawrence b. de grand" » "lawrence _. de grand", "lawrence j. de grand", "lawrence h. de grand", "lawrence b. de grande", "lawrence b. de grands", "lawrence b. de grandi"
"lawrence a. de grand" » "lawrence _. de grand", "lawrence j. de grand", "lawrence a. de grande", "lawrence a. de grands", "lawrence a. de grandi"

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: (("lawrence b. de gran") OR ((("lawrence b. de grand") OR ("lawrence a. de grand")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"lawrence b. de gran\") or (((\"lawrence b. de grand\") OR (\"lawrence a. de grand\"))))".
• Removing quotes may allow a broader search: (( lawrence b. de gran ) or ((( lawrence b. de grand ) OR ( lawrence a. de grand )))).
• Adding a wildcard symbol may retrieve word variants: (("lawrence b. de gran") or ((("lawrence b. de grand") OR ("lawrence a. de grand"))))*.