The combination is very direct: 公司 (company) + 治理 (governance) = 公司治理 (corporate governance).
The concept of “公司治理” is a relatively modern import in China, gaining prominence with the economic reforms of the 1990s and China's entry into the WTO. While the technical framework mirrors Western models, its application in China has unique characteristics.
“公司治理” is a formal, professional term. You will almost exclusively encounter it in business, financial, and legal contexts.