The verb phrase is "may find".
I think they are not paying attention to what they are reading. They may be thinking about something else at the time or listening to music or tv.
That particular phrase is a metaphor describing a difficult situation using figurative language. But it is also a very common phrase, much overused, so it would be called a cliche. Some such metaphors and cliche find themselves embedded in the language and carry a meaning that is more than just the sum of the words composing it. Such phrases are called idioms.
because it do not stand out in a word and some people don't now how to find syllobles in a word
Chris did not find it difficult to open the files but analyzing them proved more difficult than expected
I can't find this phrase using my search engine. I suspect you may have heard "friends of the sidewalk" or some other such phrase. That would mean people who were willing to donate money to repair a section of sidewalk or road.
Some do, some don't. It is wrong to generalise.
The infinitive phrase "to find the perfect birthday gift" is serving as the subject of the sentence. It tells what the speaker finds difficult.
subject
Some students can find math difficult because it requires abstract thinking. Some people deal better with concrete concepts. This is why some math problems are presented as word problems. Math is difficult for some because you must imagine things, without having physical objects to look at and understand. People who do bad with algebra often do very good with geometry, since you can SEE what you are trying to solve.
Some students find it difficult to make the transitionto a new school.
subject
Some people find some calculus difficult, some don't.
The students are able to find out the difficult words... it makes easy for them to take the meaning...
What elements of your job do you find most difficult
Because they tend to byheart it.If they learn science by reasoning and thinking it will be the most interesting subject that they would ever find.
Students may find it difficult to understand what they have read in English if they are unfamiliar with the vocabulary, grammar structures, or cultural references in the text. Additionally, lack of background knowledge on the topic, poor reading strategies, or limited practice with reading comprehension can also contribute to their difficulties in comprehension.
Because they are still involved with studies and can't deal with both things. Once they are graduated, to find a job becomes much easier.