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