Thus, the indices are used to find the rows that may match one or more portions of the particular term being queried or, in other words, eliminate those records that do not have {HEAD ~ at least a portion} of {TAIL ~ the term} to be matched 
of
Thus , the indices are used to find the rows that may match one or more portions of the particular term being queried or , in other words , eliminate those records that do not have { HEAD ~ at least a portion } of { TAIL ~ the term } to be matched
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH