Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"chung hoc d snippets" » "chung hoc code snippets", "trung hoc d snippets", "dung hoc d snippets", "hung hoa d snippets", "chung hoc do snippets", "chung hoc de snippets", "chung hoc du 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: (((("python using java snippets") OR ("chung hoc d snippets"))) OR ("locating bug core snippets"))~.
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( chung hoc d snippets ))) or ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("chung hoc d snippets"))) or ("locating bug core snippets"))*.