Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"van van trinh slippers" » "van van thinh slippers", "van van tinh slippers", "van dan trinh slippers", "van ban trinh slippers", "tan van trinh slippers", "san van trinh slippers", "van van trinh slippery", "van van trinh 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 van trinh 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 van trinh slippers"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung java java snippets ) or ( van van trinh slippers ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") or ("van van trinh slippers"))) or ("locating bug code snippets"))*.