Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khoi de bo snippets" » "khi de bo snippets", "khoa de bo snippets", "khoi he bo snippets", "khoi de bao snippets", "khoi do bo snippets", "khoi de co 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: (((("khoi de bo snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("khoi de bo snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khoi de bo snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khoi de bo snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.