Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"duc bao cho snippets" » "du bao cho snippets", "duc dao cho snippets", "duc ban cho snippets", "duc bao cao snippets", "duc bao che snippets", "duc cao cho 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 bao cho 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 bao cho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( duc bao cho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("duc bao cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.