Perhaps you should try some spelling variations:
"roberta de berganda" » "robert d berganda" (Expand Search), "roberts dj berganda" (Expand Search), "roberta _ berganda" (Expand Search), "roberta de berguna" (Expand Search)
"roberta de fernanda" » "robert d fernanda" (Expand Search), "roberts dj fernanda" (Expand Search), "roberta _ fernanda" (Expand Search), "roberta de fernando" (Expand Search), "roberta de fernandez" (Expand Search), "roberta de ofernando" (Expand Search)
"robert e bergland" » "robert _ bergland" (Expand Search), "robert j bergland" (Expand Search), "robert a bergland" (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 e bergland") OR ((("roberta de berganda") OR ("roberta de fernanda"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"robert e bergland\") OR (((\"roberta de berganda\") OR (\"roberta de fernanda\"))))".
• Removing quotes may allow a broader search: (( robert e bergland ) OR ((( roberta de berganda ) OR ( roberta de fernanda )))).
• Adding a wildcard symbol may retrieve word variants: (("robert e bergland") OR ((("roberta de berganda") OR ("roberta de fernanda"))))*.