Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dan hoi du snippets" » "dan hoc du snippets", "dai hoi du snippets", "dang khoi du snippets", "dan hoi tu snippets", "dan hoi cu snippets", "dan toi du 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 hoi du 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 hoi du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dan hoi du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dan hoi du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.