Search bar on ion select option box

Hello! May I know how to add search bar on select option box? Thank you.

<ion-item  lines="none">
    <ion-label color="scm">Project Code</ion-label> 
    <ion-select [(ngModel)]="proj_code" (ionChange)="codeSelected(proj_code)"   placeholder="Select One"  okText="OK" cancelText="Cancel" > 
      <ion-select-option value="{{item}}" class="selection"  text-wrap *ngFor="let item of projectCodeList; "  >{{item}}</ion-select-option>
    </ion-select>
    </ion-item>