Perhaps you should try some spelling variations:
based presentation » based representation, case presentation, brief presentation
commercial losses » commercial loss, commercial loans, commercial codes
gis prevention » aids prevention, risk prevention, air prevention
losses phase » phases phase, losses image, losses part
phase based » case based, pose based
code basic » some basic, code based, more basic
basic gis » basic aims

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: (( commercial code basic gis prevention ) OR ( commercial losses phase based presentation ))~.
• Adding a wildcard symbol may retrieve word variants: (( commercial code basic gis prevention ) or ( commercial losses phase based presentation ))*.