Perhaps you should try some spelling variations:
"calcium carbonate depositional" » "calcium carbonate deposits", "calcium carbonate decompositional", "calcium carbonate compositional", "calcium carbonate depositsal", "calcium carbidate depositional", "calcium cationate depositional", "calcium carboxylate depositional"
"calcium carbonate deposition" » "calcium carbonate decomposition", "calcium carbonate composition", "calcium carbonate deposits", "calcium carbidate deposition", "calcium cationate deposition", "calcium carboxylate deposition"
"calcium carbon deposition" » "calcium carbon transition", "calcium carbid deposition", "calcium cation deposition", "calcium carboxyl deposition"

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• If you are trying to use Boolean operators, they must be ALL CAPS: (((("calcium carbonate deposition") OR ("calcium carbon deposition"))) OR ("calcium carbonate depositional")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"calcium carbonate deposition\") OR (\"calcium carbon deposition\"))) or (\"calcium carbonate depositional\"))".
• Removing quotes may allow a broader search: (((( calcium carbonate deposition ) OR ( calcium carbon deposition ))) or ( calcium carbonate depositional )).
• Adding a wildcard symbol may retrieve word variants: (((("calcium carbonate deposition") OR ("calcium carbon deposition"))) or ("calcium carbonate depositional"))*.