teamworking
From Longman Business Dictionaryteam‧work‧ing /ˈtiːmˌwɜːkɪŋ-ɜːr-/ noun [uncountable]the system that is used when employees work on projects in groupsA well-designed and properly implemented system of teamworking can bring benefits to both employers and employees.
以上内容摘自：https://www.ldoceonline.com/dictionary/teamworking
这说明，teamworking 是不可数名词，不是动名词。
