The scan I get the most results with
nmap -p 1-65535 -sT -PN -T2 -A -v -v ip.ip.ip.ip
-p 1-65535 All ports
-sT TCP connect scan(not SYN scan)
-PN No Ping
-T2 Timing 2(slower it is the less likely to be detected or blocked)
-A Add version support and OS fingerprinting
-v -v Verbose, Verbose(yes twice makes it more verbose, lol)