Perhaps you should try some spelling variations:
based presentation » based representation, case presentation, brief presentation
basic prevention » asia prevention, crisis prevention, aids prevention
commerciale de » commercial code, commercial debt, commercial _
commercial doe » commercial de, commercial due, commercial code
common basic » common acid, common ai, common cases
phase based » case based, pose based
de common » der common, we common, das common
doe phase » die phase, node phase, der phase

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( commerciale de common basic prevention ) or ( commercial doe phase based presentation ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( commerciale de common basic prevention ) OR ( commercial doe phase based presentation )).
• Adding a wildcard symbol may retrieve word variants: (( commerciale de common basic prevention ) or ( commercial doe phase based presentation ))*.