Perhaps you should try some spelling variations:
formation slagging » formation imaging, formation sharing, information bagging
surface expression » surface erosion
slagging surface » sliding surface, imaging surface, changing surface
array processing » dairy processing, query processing
array imaging » arrays imaging, airway imaging, ray imaging
array string » array strong, arrays strings, array sharing

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

• Performing a fuzzy search may retrieve terms with similar spellings: formation slagging surface expression ((((array imaging) or (array string))) or (array processing))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: formation slagging surface expression ((((array imaging) OR (array string))) OR (array processing)).
• Adding a wildcard symbol may retrieve word variants: formation slagging surface expression ((((array imaging) or (array string))) or (array processing))*.