Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dong va den snippets" » "dung va den snippets", "dong ha den snippets", "luong va den snippets", "dong va dien snippets", "dong van den snippets", "dong va de 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: (((("dong va 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: (((("dong va den snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dong va den snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong va den snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.