Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dao gioi cho snippets" » "dao nguoi cho snippets", "bao gio cho snippets", "co gioi cho snippets", "dao gioi co snippets", "dao gio cho 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 gioi cho 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 gioi cho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dao gioi cho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dao gioi cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.