If you're having a hard time finding a document, you may want to try one of these tips for more effective Docstoc searches:
Put your query in quotes. It will only return results in which your search phrase appears in its entirety, and in the order in which you wrote it.
Narrow your findings. At the top of the search results page, you can filter the documents by relevance, as well as those most viewed, most downloaded, and most recent. Additionally, on the left hand column, you can filter by file type (e.g. Word, Excel, PDF, etc.) and language.
Conduct a title-specific search by starting your search with title: followed by the search term(s). For example, title: business plan, or for even more specific results, use quotes. e.g., title: "business plan." If a title search is proving unsuccessful, try searching by descriptive tag instead. The "search all documents" bar that appears in the top right-hand corner of every page searches both. Search within a specific category. After you click on a category, you'll see a search bar beneath the "search all documents" bar. Category searches will only return results within that section.