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