Depending on your menu layout settings, you can search for contacts by accessing the list from Dashboard > Jetpack CRM > Contacts or simply from Dashboard > Contacts.
The contacts list’s View All page includes a search bar on the left side: you can type in there to search for contacts.
Please note that the search matches any instances of the string you enter.
For example, if you type “mai,” the search result will display anything that contains the “mai” bit, such as Maia or Sharmaine.