Perhaps you should try some spelling variations:
clean » lean, clear, crean
aplan » kaplan, allan, ablan, apland, apalan, aplean
caalan » catalan, callan, calan, caaland, caaalan, caalean
cppalan » cppaland, cppaalan, cppalean
lan » land, alan, lean
plan » pland, palan, plean
planas » plandas, palanas, pleanas, plantas, plants, planes
clar » clara, claro, clark

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((((((((clean or aplan) or cppalan) or caalan) or lan) or plan) or cada) or clar) or planas).~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((((((clean OR aplan) OR cppalan) OR caalan) OR lan) OR plan) OR cada) OR clar) OR planas)..
• Adding a wildcard symbol may retrieve word variants: ((((((((clean or aplan) or cppalan) or caalan) or lan) or plan) or cada) or clar) or planas).*.