Question about taxonomy in advanced search

Hi,

As you can see on picture 1 I have created a few advanced search fields. I have 5 taxonomies (Listbox) already and tried to add one more to make it 6. I saved changes but when I checked the site the 6th taxonomy wasn’t there, still had 5.

So my first question is: is there a restriction to how many taxonomy fields someone will add to the advanced search field? Are we allowed to add 5 taxonomy fields only?

Now on picture 2 you can see the LNG custom field (Radio) that has a “No” and “Yes” option. The second question is: how will I make “Yes” to appear first?

Also, how will I make “Yes” and “No” options to be horizontally and not vertically?

Thank you in adnance.