Examples

打小算盘

be calculating; be petty and scheming → 打算盘

工于心计

adept at scheming; very calculating → 心计

那是别有用心的人在放冷风, 大家不要相信。

Don't believe in the rumors from those scheming people. → 放冷风

他们两个老是勾心斗角, 也不知是为什么。

No one knows why those two are always scheming against each other. → 勾心斗角

小心别被人计算。

Be careful others aren't scheming against you. → 计算