DISCLAIMER: This script is not guaranteed to work but the ITS can support you in making it work for you. The ITS reserves the right to discontinue the availability of the script or any support provided for it.
Step 1: If you don't have Python 3.6+, download it here and install it. You will need Python 3.6+ (currently 3.7.1).
Step 2: Download the script here.
Step 3: Select the offers that you want to filter and click on the Export button.
Name the file filter.csv.
Step 4: Export the full CSV of Foreign Offers from CSV > Export Foreign Offers.
Name the file ForeignOffers.csv.
Step 5: Put both files in the folder with the script.
Step 6: Run the script.
Step 7: The file ForeignOffers_filtered.csv will contain your filtered offers.