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