How to add search box to table results in admin page [closed]

<form>
<form method="post" action="" >
<input type="text" placeholder="Search Transactions.." name="submit">
<input type="submit" class="button-primary" value="Search" name="submit">
<input type="reset" class="button-primary" value="Reset Form">
</form>

should be

<form method="post" action="" >
    <input type="text" placeholder="Search Transactions.." name="search">
   <input type="submit" class="button-primary" value="Search" name="submit">
   <input type="reset" class="button-primary" value="Reset Form">
</form>

i.e. Remove extra start tag <form> and for text field name="submit" should be name="search"

I hope this will work!