Perhaps you should try some spelling variations:
multiling » multilingues
multilingue » multilinguesue
{uml}ismo." » {uml}mismo.", {uml}sismo.", {uml}istmo."
{uml}smismo." » {uml}smmismo.", {uml}smsismo.", {uml}smistmo.", {uml}asimismo."
{uml}sismos." » {uml}smismos.", {uml}ssismos.", {uml}sistmos.", {uml}mismos."
{uml}siso." » {uml}sismo.", {uml}sieso.", {uml}sido."

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

• Performing a fuzzy search may retrieve terms with similar spellings: "(multiling OR multilingue)({uml}ismo." or (({uml}siso." OR {uml}smismo.") or {uml}sismos."))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "\"(multiling OR multilingue)({uml}ismo.\" or (({uml}siso.\" OR {uml}smismo.\") or {uml}sismos.\"))".
• Removing quotes may allow a broader search: (multiling OR multilingue)({uml}ismo. or (({uml}siso. OR {uml}smismo. ) or {uml}sismos. )).
• Adding a wildcard symbol may retrieve word variants: "(multiling OR multilingue)({uml}ismo." or (({uml}siso." OR {uml}smismo.") or {uml}sismos."))*.