Marketers looking for successful keywords for search campaigns should keep them simple and to the point, according to a recent study.

Most searchers looking for items on the web enter one- or two-word queries, writes Internet Retailer, citing a study from WebSideStory and the Patricia Seybold Group. On average, one- and two-word searched constituted 83 percent of searches; on e-commerce sites, that figure was 91 percent.

Moreover, nearly 12 percent of searches lead to no results - a lost opportunity for marketers; among commerce sites, 8.5 percent of searches led to no results.

The study examined more than 34 million searches on the sites of 42 WebSideStory customers: 15 e-commerce sites, 13 lead-generation sites and 14 media sites.