Perhaps you should try some spelling variations:
iteration series » interaction series, integration series, interactions series
value iteration » value generation, value creation, value taxation
price internet » pre internet, service internet, freie internet
import value » export value
import price » import prices, export price, export prices
service. » services.

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( import value iteration series. ) or ( import price internet service. ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( import value iteration series. ) OR ( import price internet service. ))*.