Perhaps you should try some spelling variations:
"_ international investments policy series" » "_ international investment policy series", "_ international investors policy series", "_ international instruments policy series", "_ international investments poland series", "_ international investments political series"
"scale irrigation development projects series" » "scale education development projects series", "scale irrigation development policy series", "scale irrigation development project series", "scale irrigation development prospects series", "scale irrigation development projects sermons"

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: (("scale irrigation development projects series") or ("_ international investments policy series"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("scale irrigation development projects series") OR ("_ international investments policy series")).
• Removing quotes may allow a broader search: (( scale irrigation development projects series ) or ( _ international investments policy series )).
• Adding a wildcard symbol may retrieve word variants: (("scale irrigation development projects series") or ("_ international investments policy series"))*.