Not sure whether or not this applies to you but I find that many students have problems with maths because they don't fully realise that it all means something. Therefore they are trying to solve problems by memorising meaningless strings of symbols, and I think it's pretty clear that this is unlikely to be successful. My suggestion for these students is that they should vocalise what they are reading. To take an extreme and admittedly made-up example, if someone reads
$$\{\,z\in{\Bbb C}\mid z=\overline z\,\}$$
as "squiggle-$z$-funny-sort-of-e-C-with-an-extra-line-on-it-vertical-line-$z$-three-horizontal-lines-with-another-$z$-under-one-of-them-final-squiggle" then their chances of success in mathematics are vanishingly small.
Hope this helps! BTW I have never actually used the term "vocalise" with my students, but it's a good one so I might steal it ;-)