Perhaps you should try some spelling variations:
sanitation service » sanitation services
internet services » internet service
river sanitation » water sanitation, site sanitation, river navigation
china internet » china's internet, via internet, china integrated
supply china » supply chains, supply chain
supply river » supply driven, supply rise, supply rates

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( supply china internet services. ) or ( supply river sanitation service. ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( supply china internet services. ) OR ( supply river sanitation service. )).
• Adding a wildcard symbol may retrieve word variants: (( supply china internet services. ) or ( supply river sanitation service. ))*.