Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"kho va du snippets" » "khoe va du snippets", "khoi va du snippets", "nho va du snippets", "kho va dau snippets", "kho va su snippets", "kho va 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: (((("kho va 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: (((("kho va du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( kho va du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("kho va du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.