Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"19 using pre snippets" » "19 using code snippets", "19 nursing pre snippets", "19 using one snippets", "19 using ph snippets", "_ using pre snippets", "ε using pre snippets"
"missing data java snippets" » "using data java snippets", "missing java java 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 pre snippets") or ("missing data java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("19 using pre snippets") OR ("missing data java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( 19 using pre snippets ) or ( missing data java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("19 using pre snippets") or ("missing data java snippets"))) or ("locating bug core snippets"))*.