Perhaps you should try some spelling variations:
oral communication » personal communication
technologien math » technologien mit, technologien als, technologien am
math information » catch information, much information, health information
4 developing » 3 developing
developing 4 » developing _, developing a, developing e
costs 4 » costs _, costs a, costs 4.2
4 areas » 1 areas, 2 areas, 4 areal
a die » 3 die, _ die, 1 die

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "technologien math information ((a die) OR (2 die)) oral communication costs 4 developing 4 areas.~".
• Adding a wildcard symbol may retrieve word variants: technologien math information ((a die) OR (2 die)) oral communication costs 4 developing 4 areas.*.