Perhaps you should try some spelling variations:
multiling » multilingue
multilingues » multilingueues, multilingue, multilinguismo
multilingueues » multilingueueues, multilingue, multiligues
{uml}iistmo." » {uml}istmo.", {uml}iismo."
{uml}ismo." » {uml}mismo.", {uml}sismo.", {uml}istmo."
{uml}sismos." » {uml}smismos.", {uml}ssismos.", {uml}sistmos.", {uml}mismos."

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 multilingues) or multilingueues)(({uml}iistmo." or {uml}ismo.") or {uml}sismos.")~.
• If you are trying to use Boolean operators, they must be ALL CAPS: "((multiling or multilingues) or multilingueues)(({uml}iistmo." OR {uml}ismo.") or {uml}sismos.")*.
• Removing quotes may allow a broader search: ((multiling or multilingues) or multilingueues)(({uml}iistmo. or {uml}ismo. ) or {uml}sismos. )*.