Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"toan va cho snippets" » "doan va cho snippets", "tran van cho snippets", "toan ban cho snippets", "toan van cho snippets", "toan va co snippets", "toan va che 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: (((("toan va 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: (((("toan va cho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( toan va cho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("toan va cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.