Perhaps you should try some spelling variations:
terrestrial applications » industrial applications, potential applications
industrial application » industrial applications, industry applications, industrial automation
terrestrial relations » terrestrial vegetation, industrial relations, terrestrial radio

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: ((terrestrial relations) OR (((terrestrial applications) OR (industrial application)))).
• Adding a wildcard symbol may retrieve word variants: ((terrestrial relations) or (((terrestrial applications) or (industrial application))))*.