Perhaps you should try some spelling variations:
based selection » based detection, based solution, board selection
selection scale » selection shape, selection stage, selection single
scale studies » case studies
code space » cite space, pore space
home space » house space, time space, home place
one space » money space, pore space, one place

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: commercial ((code space) OR (((one space) OR (home space)))) based selection scale studies.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "commercial ((code space) or (((one space) OR (home space)))) based selection scale studies.~".
• Adding a wildcard symbol may retrieve word variants: commercial ((code space) or (((one space) OR (home space)))) based selection scale studies.*.