Perhaps you should try some spelling variations:
"locating bugs code snippets" » "locating bug code snippets"
"using java code snippets" » "using data code snippets"
"van luoc doi snippets" » "van loc doi snippets", "van luc doi snippets", "van duoc doi snippets", "van cuoc doi snippets", "van luoc dai snippets", "van hoc doi 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 code snippets") OR ("van luoc doi snippets"))) OR ("locating bugs code snippets"))~.
• Removing quotes may allow a broader search: (((( using java code snippets ) or ( van luoc doi snippets ))) or ( locating bugs code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("using java code snippets") or ("van luoc doi snippets"))) or ("locating bugs code snippets"))*.