Perhaps you should try some spelling variations:
"h. result based development strategies" » "h. result based development strategy", "h. result basin development strategies", "h. result land development strategies", "h. result rapid development strategies", "h. results based development strategies", "h. report based development strategies"
"h. kent direct investment barriers" » "h. rent direct investment barriers", "h. kunt direct investment barriers", "h. kept direct investment barriers"

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• If you are trying to use Boolean operators, they must be ALL CAPS: (("h. result based development strategies") OR ("h. kent direct investment barriers"))~.
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