car engine Find results that contain at least one of the two words.
"car engine" Find results that contain the exact phrase 'car engine'.
+car +engine Find results that contain both words.
car -engine Find results that contain the word 'car' but not 'engine'.
car* Partial match. Find results like 'car', 'carneval', 'carousell'.
In some cases an update of the SFRs can be in tens of seconds. Therefore it is recommended to create a custom SFR group with the SFRs of interest.
Check how to create a custom SFR group: