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