[تم الحل] String Translation Missing Key Phrases in Checkout Page

Background of the issue:
I am trying to translate various words and phrases on my store page using WPML. I've used Theme and Plugins Localization for both the theme and WooCommerce, but String Translation cannot find many of the terms. I also tried using Admin Texts Translation without success.

Symptoms:
String Translation cannot find many of the terms I want to translate. I expected to see an option to translate with String Translation, but I got no options.

Questions:
How can I translate these missing strings?