Most people search JIRA issues by just using the search field in top right corner in JIRA. You can write there any text and JIRA will try to find tickets that contain this phrase either in the ticket titleo o r description. In most cases this is enough to find a ticket you need without using advanced search.
Jirio Slack JIRA integration allows doing similar search with the qfind command that is easy to type and easy to use.
/jirio qfind My issue title
The syntax is very simple as well. After the command name qfind, a search phrase is followed (in our case it is “My issue title”).
Please have a look at the detailed command description on the qfind feature page.