The phrase "trouble in understanding" is grammatically correct and can be used in written English.
It is typically used to describe the difficulty one may have in comprehending something. Example: "I had trouble in understanding the complex instructions for the new software."
Moreover, we had informal interviews with some of the participants after the study, and no one claimed that they had trouble in understanding the questions.
This way, it was anticipated that the participants would have no trouble in understanding the provided functionality and accordingly assess it.
Many children (n =14) had difficulty in tracking items based on the time frame and an equivalent number of children had trouble in understanding several terms.
Part of the reasons why the students found neurology particularly difficult is that they had trouble in understanding neuroanatomy, a situation made more complex by availability of limited number of teaching aids.
Expect improvement in understanding.
This helps in understanding.
Responding quickly and spontaneously, the language barrier was described as "a big trouble for understanding courses," "struggling in every single day throughout classroom," and "my professor said my writing is not a college-level work".
While Swatch has traditionally had trouble making popular smartwatches and, in fact, has had trouble understanding consumer technology, Swatch could partner with technology providers to produce an interesting amalgam of old and new tech.
Each side eliminated jurors who it thought would have trouble understanding evidence in what Judge Leonard Sand called a document case.
The parents in Scarsdale have trouble understanding how they can benefit from standards lower than the ones they apply to themselves.
I am by no means bragging, but I don't think I have ever carried a grudge to that degree and in fact, have trouble understanding how people do.
