A system and method for reducing the number of false negatives with minimal impact on false positive search results while allowing searches to return phonetic equivalents, misspellings, common short names, and other such applicable information. New, N-Gram based indexing and search systems and methods facilitate searching of data containing non-Arabic letters, such as numbers, symbols, and foreign language characters. Ability to customize indexing and other features further enhance search results. Linguistic pattern matching search results are improved based on dynamically modified search attributes.