Can students with Learning Disabilities find a job in big companies like Google, Apple, or Microsoft.?

if the person doesn't need accommodations, there is no reason for the employer to know about it. remember that those big companies are only a smart portion of the jobs in the field...most people work for much smaller companies

As long as you have the skills and ability there's little reason why you wouldn't be able to get a job working with companies like these, being disabled doesn't necessarily stop you from working but it can make it harder. It's best to avoid telling an employer up-front unless your disability may cause problems at work (then you have to inform them), then once you have the job you can ask them to make allowances if needed. STEM fields can be more tolerant towards certain disabilities than other areas, for example Silicon Valley is well known for being full of autistic people (although they're not always formally diagnosed or disclose their diagnosis) because of skills such as logical thinking - and this includes autistic people who may have learning difficulties and need some allowances made to accommodate them. Provided you can do the work, and especially if your disability also comes with benefits too, then they may hire you.

Well if you have the skills, the stability etc, then I don't see why you can't be employed. Most big companies do have a good reputation of taking on disabled people. Some places though still discriminate and treat you like are incapable or using the disability as an excuse.