Browse:
Zotero offers two options for viewing the search bar when you're adding citations to a Word document.
The first (default) option is a thin, red search bar with a field to enter a single line of text:
The second option is a popup window of your full Zotero library called 'Classic View':
To switch to 'Classic View'
To make 'Classic View' stick in Word:
Caltech books, ebooks, & more - Catalog
Caltech subscribed journals - Journals List
Popular books - Your local library