Perhaps you should try some spelling variations:
spurring development » securing development, during development, putting development
relocation spurring » relocation housing
developing program » development program, development programs, developing product
developing biogas » developing areas, developing global, developing cities

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

• Performing a fuzzy search may retrieve terms with similar spellings: relocation spurring development ((developing program) OR (developing biogas)).~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "relocation spurring development ((developing program) OR (developing biogas)).".
• Adding a wildcard symbol may retrieve word variants: relocation spurring development ((developing program) OR (developing biogas)).*.