My students have a couple suggestions for you second sentence:
In the opinion of some psychological experts, it is necessary to open psychological courses in campus so as to help the student who have trouble dealing with plychological problems.
First, "student" and "have" do not agree. It should should "the student who has trouble..."
Second, you mispelled psychological the second time you used it.
Next, we think this sentence could be made clearer. Here is our suggestion for how to do that:
Pyschological experts think they need to open courses for students dealing with pyschologcial problems.
Finally, we wonder about the content. How is taking a psychology course going to help? What about seeking psychological treatment instead?
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