How to increase the search dropdown list for standard field like Location?

Summary:

All cities loaded under Locations do not show up in the drop-down of Location field (shows like only about 25 locations) and so does other standard fields too (Screenshot1). We can type to search the location which cannot be seen in the drop-down (again a limited drop-down list is shown), however is there a way to increase the drop-down list for better user experience?

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