Perhaps you should try some spelling variations:
"roberta de burland" » "robert e burland" (Expand Search), "robert d burland" (Expand Search), "roberts dj burland" (Expand Search)
"robert de burland" » "robert e burland" (Expand Search), "robert d burland" (Expand Search), "robert lee burland" (Expand Search)
"robert de bergland" » "robert e bergland" (Expand Search), "robert d bergland" (Expand Search), "robert lee bergland" (Expand Search), "robert de berglund" (Expand Search), "robert de england" (Expand Search), "robert de berganda" (Expand Search)

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("robert de burland") OR ("roberta de burland"))) OR ("robert de bergland"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"robert de burland\") OR (\"roberta de burland\"))) OR (\"robert de bergland\"))".
• Removing quotes may allow a broader search: (((( robert de burland ) OR ( roberta de burland ))) OR ( robert de bergland )).
• Adding a wildcard symbol may retrieve word variants: (((("robert de burland") OR ("roberta de burland"))) OR ("robert de bergland"))*.