Been trying to look at the reference but all thes say is to use use fuzzy queries and buildthem that currently do nothing.
Take a look at the app with examples https://github.com/tomtom-international/maps-sdk-for-android-examples
It contains an example with typeahead parameter.
The Search API best practices might help too! See them here: https://developer.tomtom.com/search-api/best-practices
Another great place to check is our Time to Leave tutorial which is available on GitHub.
Here is an activity source code which contains autocomplete functionality: https://github.com/tomtom-international/tomtom-use-case-time-to-leave-android/blob/master/app/src/main/java/com/tomtom/timetoleave/MainActivity.java