Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"van dan dat slippers" » "van ban dat slippers", "ban dan dat slippers", "van dao dat slippers", "van dung dat slippers", "van dong dat slippers", "van dinh dat slippers", "van dan dat slippery", "van dan dat grippers"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

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 ("van dan dat slippers"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung java java snippets") OR ("van dan dat slippers"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung java java snippets ) or ( van dan dat slippers ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") or ("van dan dat slippers"))) or ("locating bug code snippets"))*.