Perhaps you should try some spelling variations:
"19 using code snippets" » "19 using cfd snippets", "19 using one snippets", "_ using code snippets", "ε using code snippets"
"using a java slippers" » "using _ java slippers", "using a java slippery", "using a java grippers"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("19 using code snippets") or ("using a java slippers"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("19 using code snippets") OR ("using a java slippers"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( 19 using code snippets ) or ( using a java slippers ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("19 using code snippets") or ("using a java slippers"))) or ("locating bug code snippets"))*.