Perhaps you should try some spelling variations:
"khang sinh trac slippers" » "nhan sinh trac slippers", "khang sinh thai slippers", "khang sinh thuc slippers", "khang anh trac slippers", "khang sinh trac slippery", "khang sinh trac 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: (((("khang sinh trac slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("khang sinh trac slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khang sinh trac slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khang sinh trac slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.