Examples of using Difficult to obtain in English and their translations into Portuguese
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                        Colloquial
                    
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                        Official
                    
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                        Medicine
                    
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                        Financial
                    
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                        Ecclesiastic
                    
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                        Ecclesiastic
                    
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                        Computer
                    
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                        Official/political
                    
 
It might be difficult to obtain, but with your medical background.
It is difficult to obtain viable information on the global incidence of vertebral osteomyelitis.
It is very difficult to obtain older rats, because of their high mortality.
It is usually difficult to obtain consent from state properties
It's difficult to obtain sufficient blood flow.
it is difficult to obtain customer trust;
It has become much more difficult to obtain adequate financing from Europe's banks.
This resource is difficult to obtain avoiding using it to  gain power.
New opportunities, while sometimes difficult to obtain with substantial risks involved, were realized.
It's not difficult to obtain such information.
It is difficult to obtain due to  its causes being so difficult to  build up.
Drinking water is also difficult to obtain.
Otherwise, it is difficult to obtain admission.
However, large-scale distribution data are difficult to obtain.
housing were very difficult to obtain.
Getting the best customer service is something difficult to obtain these days.
Third party funding is very difficult to obtain.
At the same time, there is no evidence that drugs have become more difficult to obtain.
Information may be difficult to obtain, and decisions, once taken, may be impossible to  enforce.
it becomes difficult to obtain directly a mathematical model that describes all global processes simultaneously.