Perhaps you should try some spelling variations:
"locating bugs code snippets" » "locating bug code snippets"
"using java core snippets" » "using data core snippets"
"dong cua dang snippets" » "dung cua dang snippets", "cong cua dang snippets", "huong cua dang snippets", "dong cua cong snippets", "dong cua ban snippets"

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("using java core snippets") or ("dong cua dang snippets"))) or ("locating bugs code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using java core snippets") OR ("dong cua dang snippets"))) OR ("locating bugs code snippets")).
• Removing quotes may allow a broader search: (((( using java core snippets ) or ( dong cua dang snippets ))) or ( locating bugs code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("using java core snippets") or ("dong cua dang snippets"))) or ("locating bugs code snippets"))*.