Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khoi ly do snippets" » "khoi ky do snippets", "hoi ly do snippets", "khoi bay do snippets", "khoi ly dao snippets", "khoi ly doi snippets", "khoi ly du 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 ly do 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 ly do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khoi ly do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khoi ly do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.