Perhaps you should try some spelling variations:
"h. kent related investment demand" » "h. kent private investment demand", "h. kent estate investment demand", "h. kent road investment demand", "h. kent related investor demand", "h. event related investment demand", "h. heat related investment demand", "h. events related investment demand"
"h. heat water investment series" » "h. heat water investment services", "h. heat water investment barriers", "h. heat water investment treaties", "h. heat water investments series", "h. heat after investment series", "h. heat rates investment series", "h. peat water investment series", "h. cheap water investment series", "h. heavy water investment series"

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