Using Lucene Analyzers

Following function makes a Lucene search query, with WhiteSpaceAnalyzer.

       /// <summary>
        /// Builds a query to search for words which are seperated by a special charactors, such a '-'.
        /// forexample, if a searchText = forget-me-not no search hits will result in without this following line,
        /// even if there is a product called 'forget-me-not'.
        /// </summary>
        /// <param name="tagName">Name of the tag.</param>
        /// <param name="tagValue">The tag value.</param>
        /// <returns></returns>
        private static Lucene.Net.Search.Query ParseTagWhiteSpace(string tagName, string tagValue)
        {
            string searchText = QueryParser.Escape(tagValue.ToLower(CultureInfo.CurrentCulture));

            var parser = new MultiFieldQueryParser(LuceneSearchService.CurrentVersion, new[] { tagName },
                                                   new WhitespaceAnalyzer()) { DefaultOperator = QueryParser.Operator.AND };
            var q = parser.Parse(searchText);
            return q;
        }

The above method can be used in a search query using the following way.

var request = new QueryRequest(languageId, ProductCatalogSearchDomains.Products, FoundationContext.Token);

request.FilterTags.Add(new QueryTag { Query = ParseTagWhiteSpace(FieldNames.Body, term) });

More comprehensive example is described under the Product Catalog search section, under free text search article.