Can we say Berachot Havinenu and if soo when?
Is their a complete text of this (brought together with the first 3 and last 3 Berachoth? )
See this link for the basics
You can certainly say it if you cannot say the full Amida/Shemona esrey, however it is seldom these days that we cannot find 5 minutes to do the full thing. If you have unique circumstances, feel free to DM me.