Among the less useful of operators are the intext: and allintext: search operators. As the title says, these operators require that the given word(s) show up in the content of a web page. For example, if you searched for intext:stock (no space between intext: and the searched keyword), the returned web pages would have the word stock as part of the web page:
intext:stock
Similarly, if you searched for allintext:stock dis, you would get web pages with the words stock and dis within their text content:
allintext:stock dis
While these operators are important to remember, they’re not as useful as their intitle/allintitle/inurl/allinurl counterparts. In the vast majority of cases, skipping the intext: search function and searching on the same key words would result in the same, or largely the same, search results as using the operators.