Perhaps you should try some spelling variations:
prevention control » production control
errors prevention » terrorism prevention, fires prevention
methods computer » networks computer
control methods » control metodos, control metodes, canto methods
programs* » programa*

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

• Performing a fuzzy search may retrieve terms with similar spellings: errors prevention control methods computer (programs* OR programas*)~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "errors prevention control methods computer (programs* OR programas*)".
• Adding a wildcard symbol may retrieve word variants: errors prevention control methods computer (programs* OR programas*)*.