Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"duoc long ve snippets" » "duc long ve snippets", "duoc dong ve snippets", "duoi long ve snippets", "duoc luong va snippets", "duoc duong ve 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: (((("duoc long 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: (((("duoc long ve snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( duoc long ve snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("duoc long ve snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.