Tencent Holdings Ltd. said on Monday that it has bought a minority stake in China’s third largest search engine by traffic, Sogou for $448 million. Sogou search engine is owned by Sohu.com Inc. (NASDAQ: SOHU). The deal underpins that how large Chinese internet companies are aggressively expanding their product offerings amid intensifying competition. The deal will give Tencent a 36.5% stake in Sogou. According to research firm, CNZZ, Tencent’s aim was to prevent other big internet companies such as Qihoo 360 Technology Co. Ltd. (NYSE: QIHU) and Baidu Inc (NASDAQ: BIDU) from getting their hands on the search engine.