Perhaps you should try some spelling variations:
"site development process." » "site development projects.", "site development programs.", "site development policies.", "sme development process.", "mine development process.", "estate development process."
"a development process." » "a development projects.", "a development programs.", "a development policies."
"_ development series." » "_ development services.", "_ development agencies.", "_ development strategies."

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("site development process.") or ("a development process."))) or ("_ development series."))~.
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• Removing quotes may allow a broader search: (((( site development process. ) or ( a development process. ))) or ( _ development series. )).
• Adding a wildcard symbol may retrieve word variants: (((("site development process.") or ("a development process."))) or ("_ development series."))*.