Using FTS would certainly help you in this situation, to perform a fuzzy search (edit distance). Note that for this you’ll first need to define a Full Text Search index over your couchbase bucket. You can either make the index use-case specific by defining it just for the field of interest or set up a dynamic default index which indexes everything.
Here’s our documentation to aid you in this …
Once you have an index defined, your full text query could look like this …
curl -XPOST -H "Content-type:application/json"
This query above would match iphóne, iphoné, iphonè and iphone.
Optionally you can use fr (french) / es (spanish) / en (english) analyzers while defining your index if you think they’ll better assist your use case.