If you use Advanced Search, then there is a section called Change Log, with an option of 'created' and you can set your date parameters including Date Range
You can also do it via Search Builder
If you cannot find Change Log there then you may need to enable Logging civicrm/admin/setting/misc?reset=1, or check your Search Display Preferences civicrm/admin/...
In our experience using docx with the core features only works for very simple templates. Have a look at the CiviOffice Extension instead. It's still in development but could already do want you want: https://docs.civicrm.org/civioffice/en/latest/