Perhaps you should try some spelling variations:
integrated services » internet services
croatia integrated » romania integrated
integration theory » integration through, information theory, innovation theory
der integration » zur integration, sector integration
supply der » supply order, supply under, supply siders

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: (( supply croatia integrated services. ) OR ( supply der integration theory. ))~.
• Adding a wildcard symbol may retrieve word variants: (( supply croatia integrated services. ) or ( supply der integration theory. ))*.