Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dan cho don snippets" » "danh cho don snippets", "san cho don snippets", "dac cho don snippets", "dan cho dong snippets", "dan cho lon snippets", "dan cho doi 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 cho don 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 cho don snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dan cho don snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dan cho don snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.