Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khoi bay doc snippets" » "khi bai doc snippets", "hoi bai doc snippets", "khoi bai doc snippets", "khoi day doc snippets", "khoi ngay doc 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 bay doc 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 bay doc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khoi bay doc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khoi bay doc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.