Perhaps you should try some spelling variations:
skeletal structure » skeletal structures
structure analysis » structural analysis
life skeletal » liver skeletal, size skeletal, linear skeletal
cost analysis » content analysis
life segment » line segment, five segment, pipe segment
segment cost » segment case, segment across, segmental post

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: (( life skeletal structure analysis ) OR ( life segment cost analysis )).
• Adding a wildcard symbol may retrieve word variants: (( life skeletal structure analysis ) or ( life segment cost analysis ))*.