Perhaps you should try some spelling variations:
"locating bugs code snippets" » "locating bug code snippets"
"using java core snippets" » "using data core snippets"
"dun tang van snippets" » "dun nang van snippets", "duc tang van snippets", "dung thang van snippets", "dun dang van snippets", "dun hoang van snippets", "dun trong van 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 core snippets") OR ("dun tang van snippets"))) OR ("locating bugs code snippets"))~.
• Removing quotes may allow a broader search: (((( using java core snippets ) or ( dun tang van snippets ))) or ( locating bugs code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("using java core snippets") or ("dun tang van snippets"))) or ("locating bugs code snippets"))*.