11. The computer system of claim 9 , wherein identifying matching phrases in the body of the digital volume further comprises: determining match scores associated with the matching phrases, the match scores based at least in part on the similarity of the words in the extracted phrases and the corresponding matching phrases, and wherein determining best matching phrases from the identified matching phrases is based at least in part on the match scores.
11. The computer system of claim 9 , wherein identifying matching phrases in the body of the digital volume further comprises: determining match scores associated with the matching phrases, the match scores based at least in part on the similarity of the words in the extracted phrases and the corresponding matching phrases, and wherein determining best matching phrases from the identified matching phrases is based at least in part on the match scores. 12. The computer system of claim 11 , wherein the match scores are based at least in part on the font or layout of the matching phrases in the digital volume.