Perhaps you should try some spelling variations:
multiling » multilingue
multilingues » multilingueues, multilingue, multilinguismo
multilingueues » multilingueueues, multilingue, multiligues
{uml}simo." » {uml}simon.", {uml}sido.", {uml}sino."
{uml}sistmo." » {uml}sismo.", {uml}istmo.", {uml}sisto."
{uml}sismos." » {uml}mismos."

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

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