Perhaps you should try some spelling variations:
"using java core snippets" » "using data core snippets"
"trinh dan ba snippets" » "trinh han ba snippets", "trinh van ba snippets", "trinh san ba snippets", "trinh dan bac snippets", "trinh dan ca snippets", "trinh dan va snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code 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 ("trinh dan ba snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using java core snippets") OR ("trinh dan ba snippets"))) OR ("locating bug code snippets"))*.
• Removing quotes may allow a broader search: (((( using java core snippets ) or ( trinh dan ba snippets ))) or ( locating bug code snippets ))*.