Perhaps you should try some spelling variations:
"phase transactions and multiphase systems" » "phase transictions and multiphase systems", "phase transactional and multiphase systems", "those transactions and multiphase systems"
"base transactions and multiphase systems" » "based transactions and multiphase systems", "late transactions and multiphase systems", "based transaction and multiphase systems"
"phase transitions and multiphase systems" » "phase transition 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 transactions and multiphase systems") OR ("base transactions and multiphase systems"))) OR ("phase transitions and multiphase systems")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"phase transactions and multiphase systems\") OR (\"base transactions and multiphase systems\"))) or (\"phase transitions and multiphase systems\"))".
• Removing quotes may allow a broader search: (((( phase transactions and multiphase systems ) OR ( base transactions and multiphase systems ))) or ( phase transitions and multiphase systems )).
• Adding a wildcard symbol may retrieve word variants: (((("phase transactions and multiphase systems") OR ("base transactions and multiphase systems"))) or ("phase transitions and multiphase systems"))*.