Perhaps you should try some spelling variations:
"locating bugs code snippets" » "locating bug code snippets"
"using java java snippets" » "using data java snippets"
"van duong bo snippets" » "van dong bo snippets", "van dung bo snippets", "van phong bo snippets", "van duong co snippets", "van duong o snippets", "van truong bo 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 duong bo snippets"))) OR ("locating bugs code snippets"))~.
• Removing quotes may allow a broader search: (((( using java java snippets ) or ( van duong bo snippets ))) or ( locating bugs code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("using java java snippets") or ("van duong bo snippets"))) or ("locating bugs code snippets"))*.