Perhaps you should try some spelling variations:
"locating bugs code snippets" » "locating bug code snippets"
"using java code snippets" » "using data code snippets"
"van trinh he snippets" » "van thinh he snippets", "van tinh he snippets", "dan trinh he snippets", "van trinh han snippets", "van trinh hoa snippets", "van trinh ky 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 trinh he snippets"))) OR ("locating bugs code snippets"))~.
• Removing quotes may allow a broader search: (((( using java code snippets ) or ( van trinh he snippets ))) or ( locating bugs code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("using java code snippets") or ("van trinh he snippets"))) or ("locating bugs code snippets"))*.