Perhaps you should try some spelling variations:
"life segmented structural analysis" » "life selected structural analysis", "life oriented structural analysis", "life extended structural analysis", "life augmented structural analysis", "lower segmented structural analysis", "line segmented structural analysis", "five segmented structural analysis", "pipe segmented structural analysis"
"life segmented structure analysis" » "life segment structure analysis", "life segmental structure analysis", "life segregated structure analysis", "life augmented structure analysis", "lower segmented structure analysis", "life selected structure analysis", "line segmented structure analysis", "five segmented structure analysis", "pipe segmented structure analysis"
"life segment text analysis" » "life segment cost analysis", "life segment content analysis", "line segment text analysis", "five segment text analysis", "pipe segment text analysis", "life segments text analysis", "life segment test analysis", "life segmented text analysis"

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• If you are trying to use Boolean operators, they must be ALL CAPS: (((("life segmented structure analysis") OR ("life segmented structural analysis"))) OR ("life segment text analysis")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"life segmented structure analysis\") OR (\"life segmented structural analysis\"))) or (\"life segment text analysis\"))".
• Removing quotes may allow a broader search: (((( life segmented structure analysis ) OR ( life segmented structural analysis ))) or ( life segment text analysis )).
• Adding a wildcard symbol may retrieve word variants: (((("life segmented structure analysis") OR ("life segmented structural analysis"))) or ("life segment text analysis"))*.