Perhaps you should try some spelling variations:
computation using » computations using (Expand search), computation in (Expand search), composition using (Expand search)
purse program » pure program (Expand search), course program (Expand search), purchase program (Expand search)
using locking » using docking (Expand search), using stacking (Expand search), using tracking (Expand search)
python python » pythons python (Expand search), piton python (Expand search), pitons python (Expand search)
using purse » using pure (Expand search), using pulse (Expand search), using parse (Expand search)

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

• Removing quotes may allow a broader search: (( AND computation using purse program ) OR ( using locking python python programming ))*.