The use of {TAIL ~ approximate string matching} provides tolerance to spelling mistakes and {HEAD ~ data entry errors} 
The use of { TAIL ~ approximate string matching } provides tolerance to spelling mistakes and { HEAD ~ data entry errors }
OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD