Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"mo hoc duan snippets" » "mo hoc dan snippets", "mo hoc quan snippets", "mo hoc luan snippets", "mon hoc duan snippets", "co hoc duan snippets"

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"mo hoc duan snippets\") OR (\"python using java snippets\"))) OR (\"locating bug core snippets\"))~".
• Removing quotes may allow a broader search: (((( mo hoc duan snippets ) OR ( python using java snippets ))) OR ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("mo hoc duan snippets") OR ("python using java snippets"))) OR ("locating bug core snippets"))*.