Odd search result

A user has reported that they haven't been able to find their property in a search on a site.

The site is here:

http://www.safariawards.com

The search term is:

mahali mzuri (all lower case)

The odd thing is that it works for me here (in Safari, Firefox and Chrome on a Mac.)

Also odd is that the person can find:

camp kalahari (all lower case) - another two word, all lower case example.

And they can find:

mahali on its own without the mzuri.

And they can find:

Mahali mzuri

I imagine it will work for you there, as this is the first such report of this.

And to confirm it isn't a typo, they sent a screenshot that I have attached here.

I think this might be an odd one with no obvious explanation, but you might be able to think of something. All I can think of is that 'mz' is an unusual combination, and something in some local settings is randomly not liking it for some reason?