Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets"
"duong dan cau snippets" » "duong dang cau snippets", "huong dan cau snippets", "duong van cau snippets", "duong danh cau snippets", "duong dan ca snippets", "duong dat cau snippets"
"locating bug core snippets" » "locating bug code 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 code snippets") OR ("duong dan cau snippets"))) OR ("locating bug core snippets"))~.
• Removing quotes may allow a broader search: (((( using java code snippets ) or ( duong dan cau snippets ))) or ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("using java code snippets") or ("duong dan cau snippets"))) or ("locating bug core snippets"))*.