Neither phrases are "legal" terminology, but in common-usage they usually mean the same thing.
Charles E. O'Hara has written: 'Fundamentals of criminal investigation' -- subject(s): Criminal investigation 'An introduction to criminalistics' -- subject(s): Criminal investigation
Ronald F. Becker has written: 'Criminal investigation' -- subject(s): Criminal investigation 'Criminal investigation laboratory manual' -- subject(s): Crime laboratories, Criminal investigation, Handbooks, manuals, Handbooks, manuals, etc
Manuel S. Pena has written: 'Criminal Investigation, Practical' 'Practical Criminal Investigation' -- subject(s): Criminal investigation
Tadeusz Hanausek has written: 'Zarys taktyki kryminalistycznej' -- subject(s): Criminal investigation 'Kryminalistyka' -- subject(s): Detectives, Criminal investigation 'Wprowadzenie do kryminalistyki i kryminologii' -- subject(s): Criminal investigation, Criminology
Jerry L. Dowling has written: 'Criminal investigation' -- subject(s): Criminal investigation 'Criminal Law'
Art Buckwalter has written: 'The search for evidence' -- subject(s): Criminal Evidence, Criminal investigation 'Surveillance and undercover investigation' -- subject(s): Criminal investigation, Police patrol, Surveillance operations, Undercover operations
Steven G. Brandl has written: 'Criminal Investigation' -- subject(s): Criminal investigation
Paul Leland Kirk has written: 'Fire investigation' -- subject(s): Fire investigation 'The crime laboratory' -- subject(s): Criminal investigation 'Density and refractive index' -- subject(s): Refractive index, Specific gravity, Criminal investigation
Robert D. Keppel has written: 'Signature killers' -- subject(s): Homicide investigation, Serial murder investigation, Criminal investigation 'Profiling' 'The riverman' -- subject(s): Homicide, Serial murderers, Serial murders 'Improving the investigation of violent crime' -- subject(s): Data processing, Homicide investigation, Murder, Investigation, Criminal investigation 'Serial Violence' -- subject(s): Criminal methods, Serial murderers, Serial murder investigation, Psychology, Serial murders
Fred Edward Inbau has written: 'Criminal law and its administration' -- subject(s): Cases, Criminal procedure, Criminal law 'Criminal interrogation and confessions' -- subject(s): Police questioning, Confession (Law), Forensic psychology 'Scientific police investigation' -- subject(s): Criminal investigation 'Criminal law for the police' -- subject(s): Criminal procedure, Police, Handbooks, manuals, Criminal law 'Cases and comments on criminal justice' -- subject(s): Cases, Criminal procedure, Criminal law 'Self-incrimination' -- subject(s): Criminal Evidence, Criminal investigation, Criminals, Evidence, Criminal, Identification, United States
Arnold Markle has written: 'Instructors' manual for Criminal investigation and presentation of evidence' -- subject(s): Confession (Law), Criminal Evidence, Criminal investigation
Donovan Jacobs has written: 'Street crime investigations' -- subject(s): Police patrol, Criminal investigation 'Street cop' -- subject(s): Police patrol, Criminal investigation