Perhaps you should try some spelling variations:
primal formulation » primal formulations, dual formulation, from formulation
technology primal » technology private, technology crimes, technology practical
formulation age » formulation a, formation age, formulation de
does mobile » das mobile
age does » stage does, care does, late does
systems » system

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

• Performing a fuzzy search may retrieve terms with similar spellings: technology primal formulation age does mobile communication systems a development _ afrique.~.
• Adding a wildcard symbol may retrieve word variants: technology primal formulation age does mobile communication systems a development _ afrique.*.