Perhaps you should try some spelling variations:
potencial control » potencial controle (Expand search), potencial controlo (Expand search), potential control (Expand search)
coating method » costing method (Expand search), counting method (Expand search), casting method (Expand search)
and potencial » and potential (Expand search), and potentials (Expand search), grande potencial (Expand search)
using coating » using coatings (Expand search), using rotating (Expand search), using cutting (Expand search)
method python » method method (Expand search), python python (Expand search)

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: (( code AND potencial control program ) OR ( using coating method python programming ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( code and potencial control program ) OR ( using coating method python programming ))~".
• Adding a wildcard symbol may retrieve word variants: (( code and potencial control program ) OR ( using coating method python programming ))*.