Perhaps you should try some spelling variations:
multiling » multilingues
multilingue » multilinguesue
multiligues » multilingues, multilingual, multipliquen
{uml}uismo." » {uml}mismo.", {uml}iismo.", {uml}uisme.", {uml}umismo.", {uml}uistmo.", {uml}uiso."
{uml}sismo." » {uml}sismos.", {uml}mismo.", {uml}simo.", {uml}smismo.", {uml}sistmo.", {uml}siso."
{uml}ismo." » {uml}mismo.", {uml}istmo.", {uml}iso."

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

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