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