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