Perhaps you should try some spelling variations:
"perdida de de investigar" » "perdida de de investigacion" (Expand Search), "perdida ue de investigar" (Expand Search), "perdida de fe investigar" (Expand Search)
"medida de la investidura" » "medidas de la investidura" (Expand Search)
"perdida de de investidura" » "perdida ue de investidura" (Expand Search), "perdida de fe investidura" (Expand Search)

Try widening your search to All Fields.

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

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