Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khan va chi snippets" » "khoan va chi snippets", "nhan va chi snippets", "han va chi snippets", "khan van chi snippets", "khan va che snippets", "khan va cai 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: (((("khan va chi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("khan va chi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khan va chi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khan va chi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.