Perhaps you should try some spelling variations:
"h. about forest investment does" » "h. about foreign investment does", "h. about direct investment does", "h. about foreign investments does", "h. about forest investment codes", "h. about forest investment flows", "h. about forest investment costs", "h. among forest investment does", "h. bolu forest investment does", "h. group forest investment does"
"h. current water investment series" » "h. current water investment services", "h. current water investment barriers", "h. current water investment treaties", "h. current water investments series", "h. current rates investment series", "h. current greater investment series", "h. current rate investment series", "h. current state investment series"

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• If you are trying to use Boolean operators, they must be ALL CAPS: (("h. current water investment series") OR ("h. about forest investment does"))~.
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