Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"van ho den snippets" » "van hoa den snippets", "van hoc den snippets", "van hoe den snippets", "van hoi den snippets", "van o den snippets", "van ho dzenh 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: (((("van ho den snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("van ho den snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( van ho den snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("van ho den snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.