Perhaps you should try some spelling variations:
"using java java snippets" » "using data java snippets"
"van dong hoc slippers" » "van dong co slippers", "van dong luc slippers", "van dong hoc slippery", "van dong hoc 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.

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