Perhaps you should try some spelling variations:
"khuan hoc trinh snippets" » "khuan khoa trinh snippets", "khuyen hoc trinh snippets", "khoa hoc trinh snippets", "khuan doc trinh snippets", "khuan hoc tinh snippets", "khuan hoc sinh snippets", "khuan hoc trinh slippers"
"dung java java snippets" » "dung va java snippets", "dung java java slippers"
"locating bug code snippets" » "locating bug code slippers", "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: (((("khuan hoc trinh snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("khuan hoc trinh snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khuan hoc trinh snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khuan hoc trinh snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.