Perhaps you should try some spelling variations:
"cloud modeling algorithm" » "cloud making algorithm" (Expand Search), "flood modeling algorithm" (Expand Search), "cloud model algorithm" (Expand Search), "flow modeling algorithm" (Expand Search)
"element method algorithms" » "element two algorithms" (Expand Search), "element both algorithms" (Expand Search), "element other algorithms" (Expand Search)
"element box algorithm" » "element best algorithm" (Expand Search), "element _ algorithm" (Expand Search), "element ii algorithm" (Expand Search)

Try widening your search to All Fields.

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("element box algorithm") OR ("element method algorithms"))) OR ("cloud modeling algorithm"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"element box algorithm\") OR (\"element method algorithms\"))) OR (\"cloud modeling algorithm\"))".
• Removing quotes may allow a broader search: (((( element box algorithm ) OR ( element method algorithms ))) OR ( cloud modeling algorithm )).
• Adding a wildcard symbol may retrieve word variants: (((("element box algorithm") OR ("element method algorithms"))) OR ("cloud modeling algorithm"))*.