Perhaps you should try some spelling variations:
concurrent programming » concurrent programs, constraint programming, concurrent program
developing concurrent » developing coherent, developing concepts, modelling concurrent
allocation rules » allocation process, allocation issues, allocation models
rules developing » rates developing, iles developing, crises developing

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

• Performing a fuzzy search may retrieve terms with similar spellings: allocation rules developing concurrent programming.~.
• Adding a wildcard symbol may retrieve word variants: allocation rules developing concurrent programming.*.