The phrase "are unable to obtain" is correct and usable in written English.
You can use it when expressing a lack of ability or means to acquire something.
Example: "Due to the current circumstances, we are unable to obtain the necessary resources for the project."
Alternatives: "cannot acquire" or "are not able to get".
debt and sell Treasury bonds when their yields diverged are unable to obtain the debt to finance their activities.
These athletes have a genetic condition where the testosterone receptor has a mutation which means they are unable to obtain any benefit from it (or from injected testosterone).
However, "some people with serious kidney failure are unable to obtain dialysis on the NHS and die", said Tim Statham, chief executive of the National Kidney Federation.
Estate agents are suffering as would-be buyers are unable to obtain mortgages while banks and building societies continue to tighten lending conditions.
When young men and women are unable to obtain productive employment they are forced to live on the margins of society.
But travellers are sceptical of the development, which means they are unable to obtain planning permission after they have set up camp.
If McNamee and his lawyers are unable to obtain confirmation that the abscess existed, McNamee's credibility, rather than Clemens's, could come into question in what has become a continuing public battle between Clemens, McNamee and their lawyers.
If the Nets are unable to obtain a sound starting 2-guard, Thorn, who has been praised as a terrific hire, may come under scrutiny for two of his decisions.
Payday lenders offer short-term borrowing at a high interest rate, and claim they are filling a gap in the market for consumers who are unable to obtain cash quickly from mainstream banks.
The Medicare buy-in proposal is intended to fill a gap in the social safety net for millions of people nearing retirement who are unable to obtain or afford insurance.
The glippetts have been sent to you, but we do not carry the other merchandise and are unable to obtain any... .. Couple of days later a Bloomingdale package arrived with the frownies which were anti-wrinkle face patches.
