This is indirect access to this service. Please refer to the corresponding SDK below. GroupDocs.Search for .NET is a flexible search API to index data in popular document formats and perform advanced search operations in them. The API extracts text as well as metadata from Microsoft Office file formats (Word, Excel, PowerPoint, OneNote, Compiled HTML), PDF, Emails, ZIP archives, OpenOffice document formats and fetches data from search indexes using simple, boolean, regular expression, fuzzy, synonyms, faceted search query, case sensitive and exact phrase search types. The text auto-corrector identifies any misspells in search queries for correction before performing search operations.