Why some characters are ignored in search queries?
This is caused by what is called the analyzer: before a document can be indexed, the analyzer breaks down the text in order to determine the individual words used in it. This analyzer throws away whitespace characters, punctuation characters, etc. The same analyzer is also used to break down your query into the individual terms. As non-letters and non-digits are ignored, for example, the queries “searchterm”, “searchterm/” and “searchterm ” (with an extra space at the end) for example all end up being equivalent.
