Perhaps you should try some spelling variations:
"dcdc converter" » "dcdc converters", "hvdc converter", "dcx converter"
"lcc converter" » "lc converter", "llc converter", "ac converter"
"d.c converter" » "d.c converters", "dc converters", "d converter"

Try widening your search to All Fields.

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (((("lcc converter") OR ((("dcdc converter") OR ("d.c converter"))))) OR ("dc converter")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"lcc converter\") or (((\"dcdc converter\") OR (\"d.c converter\"))))) or (\"dc converter\"))".
• Removing quotes may allow a broader search: (((( lcc converter ) or ((( dcdc converter ) OR ( d.c converter ))))) or ( dc converter )).
• Adding a wildcard symbol may retrieve word variants: (((("lcc converter") or ((("dcdc converter") OR ("d.c converter"))))) or ("dc converter"))*.