Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"con van due snippets" » "chon van due snippets", "cong van due snippets", "can van due snippets", "con van de snippets", "con van duy snippets", "con van du snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

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: (((("con van due snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("con van due snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( con van due snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("con van due snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.