Keyword search throws results for single character if searched with punctuations

Keyword search throws results for single character if searched with punctuations

When single characters are preceded by punctuations like ' % \ _ " + search results are displayed based on the character match.

Test data: 's
Actual Result: Displays BA that matches s either by keyword or BA itself
Expected Result: I am expecting BA of the following types displayed
Men's Clothing
Women's Clothing

Note:

Test data 1: n's
Displays all BAs that contain only n’s like men’s clothing, women’s clothing etc
Test data 2: r.e (Note: I manually changes the keyword to contain r.e)
Displays BA that contains the keyword
Test data 3: .e (manually changed)
Displays BA that contains the keyword as in case 3