Why do some products not display in product searches?
Quick Shopping Cart uses MySQL, which uses "Stopwords" to compile product databases. Stopwords are words that are so common they are filtered out when a search is performed using any of these words, so no results are returned. The search function in Quick Shopping Cart may return a null result even though the word does exist in the product description.
The default list of stopwords is located on the MySQL Full-Text Stopwords page.