Perhaps you should try some spelling variations:
sampling algorithm » mining algorithm (Expand Search)
within algorithm » switching algorithm (Expand Search), matching algorithm (Expand Search), twisting algorithm (Expand Search)
element sampling » sediment sampling (Expand Search), element mapping (Expand Search), client sampling (Expand Search)
element within » elements within (Expand Search), present within (Expand Search)

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

• Removing quotes may allow a broader search: (( element within algorithm ) OR ( element sampling algorithm ))~.