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