Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"duc duong ho snippets" » "duc cuong ho snippets", "duc dung ho snippets", "duc dong ho snippets", "duc duong hoi snippets", "duc duong hoc snippets", "duc duong hoa 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 duong ho 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 duong ho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( duc duong ho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("duc duong ho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.