I search text "abe" and the result is correct for highlight value "<Abe>rGain" but if I used just 2 characters "ab" the highlight result is incorrect because highlight whole word "<AberGain>"
It sounds like you're raising an issue with search functionality. This library is only an add-on to Elasticsearch.Net that enables one to sign requests for AWS Elasticsearch service. Perhaps you should report your issue here.
I search text "abe" and the result is correct for highlight value "<Abe>rGain" but if I used just 2 characters "ab" the highlight result is incorrect because highlight whole word "<AberGain>"