Creating a search in forms

Creating a search in forms

hello im creating an onboarding form threw Zoho SItes everything is working fine but i want to know if there is anyway i can have a search bar in the form itself?

i have all the companies in a drop down box but i want to be able to hide the companies so other companies dont click the wrong file in the drop box,

i know i can use a single line and use

if (input.Search  =  "Company Name")
{
    show Venue4;
}

but you have to spell the whole word and corretly aswell,
is there a way i can create a search as type field using for or do i have to 

if (((input.Search  =  "Comp") || (input.Search  =  "Company") || (input.Search  = "   "))) etc.
{
    show Venue4;
}