Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khoi tu du snippets" » "hoi tu du snippets", "khoi su du snippets", "choi tu du snippets", "khoi tu duy snippets", "khoi tu dau snippets", "khoi tru 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 tu du 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 tu du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khoi tu du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khoi tu du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.