Bug in "series" system? [solved]

When you go to Gibraltar and you use "+ Add filters" and type "Man's Best Friends - Dogs" in the "series" box you get no results: https://en.numista.com/catalogue/index.php?e=gibraltar&r=&ct=coin&tb=y&tc=y&tn=y&tp=y&tt=y&cat=y&ru=&ca=3&no=&v=&d=&i=&a=&dg=&m=&f=&t=&w=&u=&g=&se=Man%27s+Best+Friends+-+Dogs&c=&wi=&sw=

When you go to Gibraltar and you type "Man's Best Friends - Dogs" in the "search" box you get 11 results: https://en.numista.com/catalogue/index.php?e=gibraltar&r=Man%27s+Best+Friends+-+Dogs&ct=coin&tb=y&tc=y&tn=y&tp=y&tt=y&cat=y&ru=&ca=3&no=&v=&d=&i=&a=&dg=&m=&f=&t=&w=&u=&g=&se=&c=&wi=&sw=

When you click on the "Man's Best Friends - Dogs" link here (https://en.numista.com/catalogue/pieces47046.html) you get 4 results.

When you click on the "Man's Best Friends - Dogs" link here (https://en.numista.com/catalogue/pieces194601.html) you get the other 7 results.

In all four cases "Man's Best Friends - Dogs" is written in exactly the same way. Can anybody explain where the differences come from? Can somebody fix it?

Hello,
There are 2 issues here:

• The first link you provided should return some results. I'll fix that.
  
• The series name was written in two different ways: either with a straight apostrophe (') or with a curly apostrophe (’), hence returning 2 different sets of results. I'll tell the robot to automatically replace curly apostrophes by straight apostrophes.
  

Thank's Xavier for your quick reply.
I had just noticed it had something to do with the apostrophe because when I type Man' in the series box I get two different results in the menu:



But when I type Man's in the series box both results disappear. So I knew it had something to do with the apostrophe. I just didn't realize there are two different apostrophes, a straight one and a curly one. I suppose that's a country related issue about the keyboards?

This fixed