也许你应该尝试一些拼写变化:
communication international » competition international, publication international
international tree » international trade, international green, international tea
tree dimensions » three dimensions, green dimensions, three dimension
array paving » array planning, array imaging, array probing
array string » array strong, arrays strings, array sharing
array long » array along, arrays long, array strong

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: communication international tree dimensions ((((array long) OR (array paving))) OR (array string))~.
• Adding a wildcard symbol may retrieve word variants: communication international tree dimensions ((((array long) or (array paving))) or (array string))*.