Why don't I get a fragment match in my situation?

Hello, 

I've been looking around in the project settings, but cannot seem to find the answer to the following question:

I have a project with several translatable files. The same TM is enabled across the whole project.

In one source segment of file 1, the source text is:

"Since embarking on our first commercial brew in 2017, we’ve saved more than 1.4m L of water, inspiring positive change across the industry and securing ourselves a [Award]."

I have translated this and the translation status is "Translated" with the green checkmark (ctrl + return)

In the next file, I now stumble upon this source segment:

"Since embarking on our first commercial brew in 2017, we’ve saved 1.4m L of water, inspiring positive change across the industry."

For some reason, however, I get no match in my translation memory. The tab called "translation results" gives me an NMT suggestion from MyMemory, and the tab called "Fragment matches" says "No matches found."

If I understand the concept of fragment matches well enough, this should give me something in this situation, as the two source segments are pretty similar.

Am I missing something? And what can I do to improve my fragment matching?

Thank you