Perhaps you should try some spelling variations:
"coal sector development perspectives series" » "coal sector development objectives series", "coal sector development projects series", "coal sector development priorities series", "real sector development perspectives series", "oil sector development perspectives series", "social sector development perspectives series"
"cfa staff development poverty declines" » "cfa staff development projects declines", "cfa staff development policy declines", "cfa staff development project declines", "cfa staff development poverty decline", "cfa staff development poverty lines", "cfa staff development poverty line", "a staff development poverty declines", "iea staff development poverty declines"

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (("cfa staff development poverty declines") or ("coal sector development perspectives series"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("cfa staff development poverty declines") OR ("coal sector development perspectives series")).
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