Perhaps you should try some spelling variations:
"argument mapping algorithm" » "argument making algorithm" (Expand Search), "argument mining algorithm" (Expand Search), "argument learning algorithm" (Expand Search)
"tests using algorithms" » "tests pacing algorithms" (Expand Search), "tests nine algorithms" (Expand Search), "tests sorting algorithms" (Expand Search), "tested using algorithms" (Expand Search), "results using algorithms" (Expand Search)
"level coding algorithm" » "level cosine algorithm" (Expand Search), "level modeling algorithm" (Expand Search), "level finding algorithm" (Expand Search), "level according algorithm" (Expand Search), "level using 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: (("tests using algorithms") OR ((("argument mapping algorithm") OR ("level coding algorithm"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"tests using algorithms\") OR (((\"argument mapping algorithm\") OR (\"level coding algorithm\"))))".
• Removing quotes may allow a broader search: (( tests using algorithms ) OR ((( argument mapping algorithm ) OR ( level coding algorithm )))).
• Adding a wildcard symbol may retrieve word variants: (("tests using algorithms") OR ((("argument mapping algorithm") OR ("level coding algorithm"))))*.