Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khoan ke doc snippets" » "khoan le doc snippets", "khoan va doc snippets", "toan ke doc snippets", "khoan ke do snippets", "khoan me doc snippets", "khoan ke doi 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: (((("khoan ke doc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("khoan ke doc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khoan ke doc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khoan ke doc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.