You can use keyword stemming to search the base word of a searched keyword.
For Example: If you search “doing” then it also searches base word of “doing” that is “do” in the specified post types.
Please note that if you want to search whole exact searched term then do not use this option and it is also not recommended to use when Fuzzy Matching option is set to Whole.
You can use keyword stemming by enabling the plugin option “Also search base word of searched keyword.” in the Options section of search form as displayed below.
