mutual help (a kind of low-level co-operative) ☊ like: đổi công → →
Aber das Klima in der Firma ist mittlerweile so schlecht, dass ich mich beruflich verändern möchte. ☊ 
Nhưng hoàn cảnh công ty lúc này quá tồi tệ đến nỗi anh muốn đổi công việc khác. ☊ (Lektion 82, Nr. 1166) 'Have you ever thought of changing your job?' 'No, never/No I haven't.' ☊ ever ☊
I buy you lunch and you fix my computer. Is that a fair exchange? ☊ exchange ☊
Since he changed jobs he's looked like a new man. ☊ new ☊
That was years ago. I've changed jobs since then. ☊ since ☊
think doing sth: She's thinking of changing her job. ☊ think about/of sb/sth ☊