Perhaps you should try some spelling variations:
international observation » international conservation, international preservation, international cooperation
observation data » observations data, observational data, observation _
data dimension » data dimensions, data dimensional, dati dimensioni
array drift » spray drift, array driven
array drive » array device
array pixel » array pixels

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: international observation data dimension ((((array drift) or (array drive))) or (array pixel))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: international observation data dimension ((((array drift) OR (array drive))) OR (array pixel)).
• Adding a wildcard symbol may retrieve word variants: international observation data dimension ((((array drift) or (array drive))) or (array pixel))*.