Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dan dao cho snippets" » "van dao cho snippets", "dan dat cho snippets", "dan da cho snippets", "dan cao cho snippets", "dan dac cho snippets", "dan dao ho 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: (((("dan dao 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: (((("dan dao cho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dan dao cho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dan dao cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.