Perhaps you should try some spelling variations:
"natural writing" » "natural lighting", "natural settings", "doctoral writing"
"cultural sector" » "cultural factors", "agricultural sector", "cultural history"
"nature writing" » "feature writing", "features writing"

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: (("nature writing") OR ((("natural writing") OR ("cultural sector")))).
• Removing quotes may allow a broader search: (( nature writing ) or ((( natural writing ) or ( cultural sector )))).
• Adding a wildcard symbol may retrieve word variants: (("nature writing") or ((("natural writing") or ("cultural sector"))))*.