TanSaburou is a full text search utility. It can search Word, Excel, PDF and HTML file content.
IT can search the following file contents.
1. WORD (.docx, .docm, .doc)
2. EXCEL (.xlsx, .xlsm, .xls)
3. PowerPoint (.pptx, .pptm, .ppt)
4. PDF (.pdf)
5. HTML (.html, .htm)
6. TEXT (.txt)
7. Rich Text (.rtf)
8. Outlook (.eml)

The license of this software is Freeware, you can free download and free use this search tool software.