Use it if you don't know exactly what to search for or several versions exist
E.g., András* matches these: "andrásnak", "andrással", "andrásékhoz".
? - matches zero or one character
E.g., utc?a matches both "utcza" and "utca".
! - matches exactly one character
E.g., utc!a matches: "utcza", but does not find "utca".
Use it to link more search expressions together
E.g., Petőfi AND Sándor finds all results containing both "Petőfi" and "Sándor".
E.g., Petőfi OR Kossuth finds all results containing "Petőfi" or "Kossuth" or both.
E.g., Petőfi NOT Sándor finds all results containing "Petőfi", but not "Sándor".
Use it when the distance between the search expressions is important
E.g., "Petőfi Sándor" finds all results containing both "Petőfi" and "Sándor" placed next to each other exactly in this order.
E.g., Petőfi 6W Sándor finds "Petőfi, avagy Sándor" as both expressions are within the given distance (6 words).
E.g., Petőfi 6N Sándor matches "Sándor (a Petőfi)".