Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dao khong du snippets" » "dai khong du snippets", "dao khang du snippets", "sao khong du snippets", "dao khong de snippets", "dao khong do snippets", "dao khong tu 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: (((("dao khong 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: (((("dao khong du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dao khong du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dao khong du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.