Perhaps you should try some spelling variations:
communication conversion » communication conversation, communications convention, communication cohesion
conversion del » conversion _
parsons basic » pearson basic, person basic, parsing basics
basic linear » quasi linear, basic life
del parsons » del paso's, l parsons, level parsons

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

• Performing a fuzzy search may retrieve terms with similar spellings: communication conversion del parsons basic linear~.
• Adding a wildcard symbol may retrieve word variants: communication conversion del parsons basic linear*.