effort
The German word 'Bemühung' translates to 'effort' in English. It is used to describe the work or energy put into achieving something. For example, 'Es erfordert viel Bemühung, eine Fremdsprache zu lernen.' (It takes a lot of effort to learn a foreign language.)
Despite all effort, I couldn't solve the problem.
In this sentence, 'Bemühung' is used to represent effort or attempt one puts is a given task. Even with all the effort, the speaker was unable to solve a problem.
Your effort to learn German is impressive.
Here, 'Bemühung' is used to indicate the effort someone is putting into learning German. The result of their effort is that the speaker is impressed.
Without effort, there is no success.
In this phrase, 'Bemühung' stands for the effort needed to achieve success. Without putting in the necessary effort or attempt - denoted by 'Bemühung' - there can be no success.