Perhaps you should try some spelling variations:
lcc converter » dcdc converter, dc converter, pfc converter
llc converter » dc converter, pfc converter, luo converter
lc converter » dc converter, c converter, ld converter
ac converter » dc converter, a converter, dc converters

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 (((((lc converter) OR (llc converter))) OR (ac converter)))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((lcc converter) or (((((lc converter) OR (llc converter))) or (ac converter))))".
• Adding a wildcard symbol may retrieve word variants: ((lcc converter) or (((((lc converter) OR (llc converter))) or (ac converter))))*.