Perhaps you should try some spelling variations:
multiling » multilingue
multilingues » multilingueues, multilingue, multilinguismo
multilingueues » multilingueueues, multilingue, multiligues
{uml}isismo." » {uml}imismo.", {uml}isimo."
{uml}sismo." » {uml}mismo.", {uml}simo."
{uml}sismos." » {uml}mismos.", {uml}simos."

Try widening your search to All Fields.

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}isismo." or {uml}sismo.") or {uml}sismos.")~.
• If you are trying to use Boolean operators, they must be ALL CAPS: "((multiling or multilingues) or multilingueues)(({uml}isismo." OR {uml}sismo.") or {uml}sismos.").
• Removing quotes may allow a broader search: ((multiling or multilingues) or multilingueues)(({uml}isismo. or {uml}sismo. ) or {uml}sismos. ).
• Adding a wildcard symbol may retrieve word variants: "((multiling or multilingues) or multilingueues)(({uml}isismo." or {uml}sismo.") or {uml}sismos.")*.