Perhaps you should try some spelling variations:
"phase transactional and multiphase systems" » "phased transactional and multiphase systems", "based transactional and multiphase systems", "phase transictions and multiphase systems"
"phase transitions and multiphase systems" » "phase transition and multiphase systems", "phase transactions and multiphase systems"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: (("phase transactional and multiphase systems") OR ("phase transitions and multiphase systems")).
• Removing quotes may allow a broader search: (( phase transactional and multiphase systems ) or ( phase transitions and multiphase systems )).
• Adding a wildcard symbol may retrieve word variants: (("phase transactional and multiphase systems") or ("phase transitions and multiphase systems"))*.