Perhaps you should try some spelling variations:
introduction scale » introduction scalar, introduction scope, introduction space
scale density » spore density, spine density, hole density
array probing » arrays probing, assay probing, array profiling
array string » array strong, arrays strings, array sharing
array using » arrays using

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: general introduction scale density ((((array using) OR (array probing))) OR (array string))~.
• Adding a wildcard symbol may retrieve word variants: general introduction scale density ((((array using) or (array probing))) or (array string))*.