Here's a breakdown:
* Pagpapanibago: Renewal
* Ng: of
* Mga: plural marker (for "pangako")
* Pangako: Vows, promises
Here are some other possible translations, depending on the context:
* Pag-uulit ng mga panunumpa: This focuses on the act of repeating the vows.
* Pagpapatatag ng mga pangako: This emphasizes strengthening or solidifying the vows.
* Pagpapahayag muli ng mga pangako: This highlights the act of expressing the vows again.
Ultimately, the best translation depends on the specific context and the nuance you want to convey.