Issue While Perfroming Query Search on Index

Hi Team,

We are perfroming a multiple field combination search on a Index and we observe some abnormal behavior during search . The data is present in Index but it is returning null value but if we rerun the same REST API command , again it shows the actual data and it repeats in that pattern.

GET sfw230627v1/_search
 {
  "query": {
  "bool":{"must":[{"range":{"timestamp":{"gte":"1683314134000","lte":"1684091734000"}}},{"term":{"cg_operator":"BELOC"}},{"term":{"imsi":"404971387107291"}},{"wildcard":{"sms_content":"*art*"}},{"match":{"tpoa":"AIRTEL"}}]

Could you please tell us know why we are seeing such kind of behavior since data is present in Index .

Thanks,
Debasis