Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"dung ket van slippers" » "dong ket van slippers", "dung kem van slippers", "dung viet van slippers", "dung ket va slippers", "dung ket doan slippers", "dung ket van slippery", "dung ket van 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 ket van 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 ket van slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung ket van slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung ket van slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.