Perhaps you should try some spelling variations:
"world trade practices central business guide" » "world trade practices general business guide", "world trade practice center business guide", "world trade practices contractual business guide"
"world trade price control business guide" » "world trade price controls business guide", "world trade price centric business guide", "world trade price country business guide", "world trade prices control business guide", "world crude price control business guide", "world bride price control business guide"

Try widening your search to All Fields.

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("world trade price control business guide") or ("world trade practices central business guide"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("world trade price control business guide") OR ("world trade practices central business guide")).
• Removing quotes may allow a broader search: (( world trade price control business guide ) or ( world trade practices central business guide )).
• Adding a wildcard symbol may retrieve word variants: (("world trade price control business guide") or ("world trade practices central business guide"))*.