Perhaps you should try some spelling variations:
"doi duy trinh slippers" » "doi quy trinh slippers", "doi duy thinh slippers", "doi qua trinh slippers", "do duy trinh slippers", "doi day trinh slippers", "doi duy trinh slippery", "doi duy 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"

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("doi duy 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: (((("doi duy trinh slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( doi duy trinh slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doi duy trinh slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.