The phrase "all possible action" is correct and usable in written English.
It can be used when discussing the range of actions that can be taken in a particular situation or context.
Example: "In order to resolve the issue, we must consider all possible action that can be taken to address the problem."
Alternatives: "all available options" or "every potential action".
The actions belong to a predefined set A. Without loss of generality, A includes all possible actions from all states at all times.
"I will take whatever legal measures are necessary to fight this sentence and will take all possible actions to try to minimise the irreperable damage done," he said.
For President Obama, U.S. military intervention has to be the least desirable of all possible actions — one with unforeseeable consequences, including the risk of becoming mired in a new, multi-sided Middle East conflict.
This paper addresses the issue of studying a food complex system in a reverse engineering manner with the aim of identifying the set of all possible actions that makes it reach a quality target with respect to manufacturing constraints.
We also show that the minimum time required by an agent to reach a desired location, and the maximum time an agent can stay safe within a set of locations, against all possible actions of its adversaries are both computable.
Based on inputs ranging from radar data and current position to mission status and intelligence feeds, the system would divide the set of all possible actions into those that are ethical and those that are not.
"So, it is better to wait until things calm down, so the government will not be under pressure 'to do something' in a situation when all possible actions are counterproductive or dangerous".
The city council of Terrassa, to the north of Barcelona, has reportedly written to banks holding more than 5,000 homes demanding they take "all possible actions to find tenants" or hand the homes over to the council to use for social housing.
