Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"duc ve chu snippets" » "duc va chu snippets", "duc vy chu snippets", "uc ve chu snippets", "duc ve cau snippets", "duc ve che 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 ve chu 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 ve chu snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( duc ve chu snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("duc ve chu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.