Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"gao toan cao snippets" » "bao toan cao snippets", "gioi toan cao snippets", "bai toan cao snippets", "gao toan ban snippets", "gao toan tap 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: (((("gao toan cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("gao toan cao snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( gao toan cao snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("gao toan cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.