Perhaps you should try some spelling variations:
"comparacion del crc" » "comparacion de crc", "preparacion del crc", "comparacion del crm", "comparacion del crai"
"comparativo del crc" » "comparativo de crc", "comparativo del crm", "comparativo del crai"
"composicion del cc" » "composicion y cc", "disposicion del cc", "composicion del ccu"
"composicion de crm" » "disposicion de crm"

Try widening your search to All Fields.

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((((("comparacion del crc") OR ("comparativo del crc"))) or ("composicion de crm"))) or ("composicion del cc"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((((("comparacion del crc") OR ("comparativo del crc"))) OR ("composicion de crm"))) OR ("composicion del cc")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((((\"comparacion del crc\") OR (\"comparativo del crc\"))) or (\"composicion de crm\"))) or (\"composicion del cc\"))".
• Removing quotes may allow a broader search: (((((( comparacion del crc ) OR ( comparativo del crc ))) or ( composicion de crm ))) or ( composicion del cc )).
• Adding a wildcard symbol may retrieve word variants: (((((("comparacion del crc") OR ("comparativo del crc"))) or ("composicion de crm"))) or ("composicion del cc"))*.