Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"duc dong doi snippets" » "duoc dong doi snippets", "duc dung doi snippets", "duc cong doi snippets", "duc duong doi snippets", "duc dong hoi 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: (((("duc dong doi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("duc dong doi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( duc dong doi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("duc dong doi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.