It worked but encountered with another issue in the same. It seems TextFragmentCollection holds only 4 TextFragment items.
I tried with 3 search options and found only 4 fragments while collection was shoing counts of 17, 9 etc.
Below is the code piece I am using:
textFragmentAbsorber = new TextFragmentAbsorber(@"(?<=Interest Rate)((.)*)");
TextSearchOptions textSearchOptions = new TextSearchOptions(true);
textFragmentAbsorber.TextSearchOptions = textSearchOptions;
textFragmentCollection = textFragmentAbsorber.TextFragments;
//loop through the fragments
foreach (TextFragment textFragment in textFragmentCollection)