Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khoi da voi snippets" » "khoi dau voi snippets", "khoi de voi snippets", "khoi va voi snippets", "khoi dao voi snippets", "khoi dua voi snippets", "khoi ba voi 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: (((("khoi da voi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("khoi da voi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khoi da voi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khoi da voi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.