Perhaps you should try some spelling variations:
coder collocation » power allocation (Expand search), order allocation (Expand search), des collocations (Expand search)
collocation tree » allocation tree (Expand search), collocation grid (Expand search), collaboration three (Expand search)
tree algorithms » the algorithms (Expand search), based algorithms (Expand search)
algorithms are » algorithms and (Expand search), algorithms an (Expand search), algorithms ag (Expand search)
python python » pythons python (Expand search), piton python (Expand search), pitons python (Expand search)

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "(( coder collocation tree algorithms are ) OR ( api python python python programming ))~".
• Adding a wildcard symbol may retrieve word variants: (( coder collocation tree algorithms are ) OR ( api python python python programming ))*.