Perhaps you should try some spelling variations:
"locating bugs code snippets" » "locating bug code snippets", "locating bugs code slippers"
"using java 4 snippets" » "using data 4 snippets", "using java _ snippets", "using java 4 slippers"
"van quan java snippets" » "van quan va snippets", "van ban java snippets", "van quan java slippers"

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: (((("van quan java snippets") OR ("using java 4 snippets"))) OR ("locating bugs code snippets"))~.
• Removing quotes may allow a broader search: (((( van quan java snippets ) or ( using java 4 snippets ))) or ( locating bugs code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("van quan java snippets") or ("using java 4 snippets"))) or ("locating bugs code snippets"))*.