Perhaps you should try some spelling variations:
"van hung tran slippers" » "van huong tran slippers", "van quang tran slippers", "van hung thang slippers", "van dung tran slippers", "manh hung tran slippers", "van duong tran slippers", "van hung tran slippery", "van hung tran grippers"
"using a java snippets" » "using _ java snippets"
"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.

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