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