List of steps to reproduce (step by step, including full links if applicable):
For most searches, there is a problem with diacritics and apostrophes: pages with them show up in Special:Search only typed exactly as they are, otherwise the page will not be shown. Often folks write in a word doc and then copy and paste inside wiki. If someone search with the normal apostrophe from the computer keyword, it won't find the word because Word turned it to another kind of apostrophe.
What should have happened instead?:
Search should show correct results also if diacritics and apostrophes are involved.
Software version (if not a Wikimedia wiki), browser information, screenshots, other information, etc.: current version on nia.wikipedia.org