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When a field in the Case List is included in the list of Sort Fields in the case list in CommCare HQ, fuzzy matching is enabled. For more information on setting up fields to sort by see [to delete] Case List Sortingand Case Detail Configuration.
You should expect that in CommCare mobile when you have a field that is applicable for fuzzy matching that after you type more than 3 characters CommCare should identify words that are very close to whatever is typed into the search box.
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