Perhaps you should try some spelling variations:
multilingues » multilinguismo
{uml}uismo. » {uml}mismo., {uml}sismo., {uml}uisme., {uml}umismo., {uml}usismo., {uml}uistmo.
{uml}iismo. » {uml}mismo., {uml}sismo., {uml}itsmo., {uml}imismo., {uml}isismo., {uml}iistmo.
{uml}ismo. » {uml}mismo., {uml}sismo., {uml}istmo.
{uml}smismo. » {uml}smmismo., {uml}smsismo., {uml}smistmo., {uml}asimismo.

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

• Performing a fuzzy search may retrieve terms with similar spellings: (multilingue or multilingues)(({uml}uismo. OR {uml}iismo.) or ({uml}ismo. or {uml}smismo. ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (multilingue OR multilingues)(({uml}uismo. OR {uml}iismo.) OR ({uml}ismo. OR {uml}smismo. )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(multilingue or multilingues)(({uml}uismo. OR {uml}iismo.) or ({uml}ismo. or {uml}smismo. ))".
• Adding a wildcard symbol may retrieve word variants: (multilingue or multilingues)(({uml}uismo. OR {uml}iismo.) or ({uml}ismo. or {uml}smismo. ))*.