Perhaps you should try some spelling variations:
textual preprocessing » textual processing (Expand search), spectral preprocessing (Expand search), data preprocessing (Expand search)
increased textual » increased sexual (Expand search), increased contextual (Expand search), increased central (Expand search)
during increased » during increasing (Expand search), producing increased (Expand search), favoring increased (Expand search)
decrease during » increase during (Expand search), increases during (Expand search), increased during (Expand search)
decrease and » decreases and (Expand search), decrease in (Expand search), decrease of (Expand search)
and decrease » and decreases (Expand search), and decreased (Expand search), and increase (Expand search)
decrease to » decreased to (Expand search), decrease toc (Expand search), decrease the (Expand search)

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

• Removing quotes may allow a broader search: (( decrease during increased textual preprocessing ) OR ( decrease and decrease to decrease ))~.