OR Query Not Working?

Open Source Elasticsearch and Kibana
1

I am trying to OR together two clauses in a single query but I am seeing some strange behavior and am looking for guidance

Given and index index1 with two documents -

{"column1": "A"} with _id=1
{"column1": "B"} with _id=2

When run a POST index1/_search with following body -

{"query": {
    "bool": {
        "minimum_should_match": 1,
        "should": [
            {
                "bool": {
                    "must": [
                        {"term": {"_id": "1"}},
                        {"term": {"column1": "A"}}
                    ]
                }
            },
            {
                "bool": {
                    "must": [
                        {"term": {"_id": "2"}},
                        {"term": {"column1": "B"}}
                    ]
                }
            }
        ]
    }
}}

I get no results. What I was expecting was both documents to be returned. If I remove one of the column1 term matches, I will get the other document. if I remove both column1 term matches I get both documents?

What am I doing wrong?