Perhaps you should try some spelling variations:
"decrease shear resistance" » "decrease wear resistance" (Expand Search), "decrease stress resistance" (Expand Search), "decrease tumor resistance" (Expand Search)
"decrease high resistance" » "decrease host resistance" (Expand Search), "decrease highly resistant" (Expand Search)
"decrease weak resistance" » "decrease wear resistance" (Expand Search), "decrease heat resistance" (Expand Search), "decrease 1_wear resistance" (Expand Search)

Try widening your search to All Fields.

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("decrease high resistance") OR ((("decrease shear resistance") OR ("decrease weak resistance"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"decrease high resistance\") OR (((\"decrease shear resistance\") OR (\"decrease weak resistance\"))))".
• Removing quotes may allow a broader search: (( decrease high resistance ) OR ((( decrease shear resistance ) OR ( decrease weak resistance )))).
• Adding a wildcard symbol may retrieve word variants: (("decrease high resistance") OR ((("decrease shear resistance") OR ("decrease weak resistance"))))*.