Perhaps you should try some spelling variations:
multiling » multilingues
multilingue » multilinguesue
multilingumistmo » multilinguesumistmo, multilinguismo, multilinguisme, multilinguista
{uml}usismo." » {uml}lusismos.", {uml}usmismo.", {uml}usistmo.", {uml}usiso.", {uml}usismos.", {uml}umismo.", {uml}usimo."
{uml}ismo." » {uml}mismo.", {uml}istmo.", {uml}iso."
{uml}sismo." » {uml}smismo.", {uml}sistmo.", {uml}siso.", {uml}sismos.", {uml}mismo.", {uml}simo."

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) or multilingumistmo)({uml}usismo." OR ({uml}ismo." or {uml}sismo."))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "\"((multiling or multilingue) or multilingumistmo)({uml}usismo.\" OR ({uml}ismo.\" or {uml}sismo.\"))".
• Removing quotes may allow a broader search: ((multiling or multilingue) or multilingumistmo)({uml}usismo. OR ({uml}ismo. or {uml}sismo. )).
• Adding a wildcard symbol may retrieve word variants: "((multiling or multilingue) or multilingumistmo)({uml}usismo." OR ({uml}ismo." or {uml}sismo."))*.