Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets", "using java core snippets"
"huong doi da snippets" » "huong dan da snippets", "trong doi da snippets", "dung doi da snippets", "huong doi dau snippets", "huong doi dam snippets", "huong doi dan snippets"
"locating bug code snippets" » "locating bug core snippets", "locating bung code snippets", "locating bugs code 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: "((((\"using java code snippets\") OR (\"huong doi da snippets\"))) OR (\"locating bug code snippets\"))~".
• Removing quotes may allow a broader search: (((( using java code snippets ) OR ( huong doi da snippets ))) OR ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("using java code snippets") OR ("huong doi da snippets"))) OR ("locating bug code snippets"))*.