Problem Statement/Rationale

The issue that searches cannot be done only with letter 'a'

Steps to Reproduce

```

db.stores.insertMany(
  [
    { _id: 1, description: "a" },
    { _id: 2, description: "b" },
    { _id: 3, description: "c" },
  ]
)

db.stores.createIndex( { description: "text" } )

db.stores.find( { $text:

{ $search: "a" }

} )

```

Expected Results

description 'a' should be in the result.

Actual Results

'b' and 'c' are searched, but not only 'a'.