We are talking about on-campus work in general. CPT's and OPT's are considered off-campus work (source: http://www.uscis.gov/portal/site/uscis/menuitem.eb1d4c2a3e5b9ac89243c6a7543f6d1a/?vgnextoid=e34c83453d4a3210VgnVCM100000b92ca60aRCRD&vgnextchannel=e34c83453d4a3210VgnVCM100000b92ca60aRCRD). If you have proper paperwork (like you did when you were able to do two internships), then of course you can work off-campus and the restrictions are different than for on-campus.  

Guchcha_chor,

Like KnockKnock has emphasized, talk to your DSO and make sure you have written permissions. If your DSO does not have the answer, try to find someone at USCIS (might be hard) to answer your question. Don't do anything stupid based on what people in "sajha" tell you. At the end of the day, if something goes wrong, you have no one to point to finger to.  Better safe than sorry.