I've inherited a) a .pdf, as the only remaining descendant of a former .doc or .docx file; b) a directory full of cryptically-named .vsd source files. Is there any quick and easy way I can search the .vsd files for recognisable text and find out which .vsd is the origin of (for example) the Chip Manufacturing graphic? ["Chip Manufacturing" is human-readable text in a diagram in the .pdf]

Thanks in advance!