Perhaps you should try some spelling variations:
sediment structure » sedimentary structures, document structure, argument structure
structure analysis » structural analysis
cases analysis » case analysis, gases analysis, bases analysis
lake sediment » lake sediments
segment cases » segment case, segment biases, segment based
line segment » line segments

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: (( lake sediment structure analysis ) OR ( line segment cases analysis )).
• Adding a wildcard symbol may retrieve word variants: (( lake sediment structure analysis ) or ( line segment cases analysis ))*.