One of Qlik Sense key functionalities is Master items.
When you implement Qlik Sense in a large organization, you tend to have hundreds of Master items. The ability to search for an item is therefor important. Today the search function is limited, and I suggest the following features, as an minimum for implementation asap:
Include description in search
Include the possibility of combining the search across tags, title and descriptions.
Make the search function out of the box like the search function in spotlight/iphone/google: when people search for "cars germany" they expect to find a measure named "cars europe-germany" - not the case right now.
Best match options / did-you-mean: The search does only return exact matches! It the user search for "cars - germany" and the measure is named "cars germany" the search will show no results.