Perhaps you should try some spelling variations:
"dung cua trinh slippers" » "dung qua trinh slippers", "dung cua tinh slippers", "dung xuan trinh slippers", "dung luan trinh slippers", "dung cho trinh slippers", "dung cua trinh slippery", "dung cua trinh grippers"
"dung rate code snippets" » "dung dat code snippets", "dung vat code snippets", "dung mat code snippets", "dung rate core snippets"
"locating bug code snippets" » "locating bug core snippets", "locating bung code snippets", "locating bugs code snippets"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("dung cua trinh slippers") or ("dung rate code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung cua trinh slippers") OR ("dung rate code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung cua trinh slippers ) or ( dung rate code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung cua trinh slippers") or ("dung rate code snippets"))) or ("locating bug code snippets"))*.