Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"using java java snippets" » "using data java snippets"
"vi dung len snippets" » "vi dung nen snippets", "vi dung le snippets", "vi dung luan snippets", "va dung len snippets", "vi ung len snippets", "vi dong len 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: (((("vi dung len snippets") OR ("using java java snippets"))) OR ("locating bug core snippets"))~.
• Removing quotes may allow a broader search: (((( vi dung len snippets ) or ( using java java snippets ))) or ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("vi dung len snippets") or ("using java java snippets"))) or ("locating bug core snippets"))*.