BEIJING — Chinese search giant Baidu Inc. will use Microsoft’s Bing for some English-language results as the software giant tries to expand its small share of China’s search market. China has the world’s biggest population of Internet users, with more than 450 million people online. Global e-commerce, search and other Internet brands have struggled to gain a foothold against aggressive local competitors in a heavily regulated market.

No financial details of the tie-up between Microsoft Corp. and Baidu were released. The Chinese company has been looking at possible expansion abroad.