Perhaps you should try some spelling variations:
"1944 Icelandic constitutional referendum" » "1944 Icelandic institutional referendum", "1944 Icelandic constitucionales referendum", "1944 Icelandic institucional referendum", "1944 Icelandic constitucional referendum", "1944 Icelandic constructional referendum"
"1944 Icelandic constitution referendum" » "1944 Icelandic constitucion referendum", "1944 Icelandic institution referendum", "1944 Icelandic construction referendum"
"1944 Icelandic institucion referendum" » "1944 Icelandic institucional referendum", "1944 Icelandic instituciones referendum"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("1944 Icelandic constitutional referendum") OR ("1944 Icelandic constitucional referendum"))) OR ((("1944 Icelandic constitution referendum") OR ("1944 Icelandic institucion referendum"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"1944 Icelandic constitutional referendum\") OR (\"1944 Icelandic constitucional referendum\"))) OR (((\"1944 Icelandic constitution referendum\") OR (\"1944 Icelandic institucion referendum\"))))".
• Removing quotes may allow a broader search: (((( 1944 Icelandic constitutional referendum ) OR ( 1944 Icelandic constitucional referendum ))) OR ((( 1944 Icelandic constitution referendum ) OR ( 1944 Icelandic institucion referendum )))).
• Adding a wildcard symbol may retrieve word variants: (((("1944 Icelandic constitutional referendum") OR ("1944 Icelandic constitucional referendum"))) OR ((("1944 Icelandic constitution referendum") OR ("1944 Icelandic institucion referendum"))))*.