Issue
The Order field defined in the search source is not used to order the search results displayed in the TypeAhead search widget or Search Page widget. It is only used to sort the search source selection Search Nav widget in the search page as shown in the following image.
Ordering the search based on relevancy
Service Portal search functionality is similar to the search inside the platform. To get more relevant search results, use document scoring.
See these knowledge articles:
For document scoring: Zing computes document scores using three components
For Zing text search: Set the relative weight of a field
Add the ts_weight attribute to the dictionary entry of the relevant field to display on the top. The maximum value given is 255.
Re-index the table to display the changes.
