Sogou teamed up with Microsoft on Thursday, launching an English language search service in a bid to gain more market share in China's online search market.

Sogou, a relatively small online search engine operator in China, said in a statement that it will leverage the global search technology of Microsoft's bing and provide English-language web information and academic data to better serve Chinese's increasing demand for global information.

The newly launched service is able to help Chinese users get access to trillions of pieces of English-language information. To better tailor to the demand of Chinese, the service is able to automatically translate Chinese language search requests and get users English-language research results.

The announcement came at a time that Baidu, which accounts more for 70 percent of China's online search market, is being questioned on its authority due to its paid listing system.

A college student died in April after seeking information on a controversial medical treatment, which was posted among the top results on Baidu.