Perhaps you should try some spelling variations:
communication conversacion » communication conversation, communication cooperation, communication cohesion
batch suspension » jacq suspension, bar suspension, base suspension
gas dispersion » wave dispersion, _ dispersion
euler like » heusler like, teller like, regular like
line » link, life

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

• Performing a fuzzy search may retrieve terms with similar spellings: communication conversacion ((gas dispersion) OR (batch suspension)) ((euler like) OR (euler line))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "communication conversacion ((gas dispersion) OR (batch suspension)) ((euler like) OR (euler line))".
• Adding a wildcard symbol may retrieve word variants: communication conversacion ((gas dispersion) OR (batch suspension)) ((euler like) OR (euler line))*.