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