Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets"
"dung hoc cong snippets" » "dong hoc cong snippets", "dung thuoc cong snippets", "trung hoc cong snippets", "dung hoc co snippets", "dung cac cong snippets", "dung hoc dung snippets"
"locating bug core snippets" » "locating bug 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 code snippets") OR ("dung hoc cong snippets"))) OR ("locating bug core snippets"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"using java code snippets\") OR (\"dung hoc cong snippets\"))) OR (\"locating bug core snippets\"))*".
• Removing quotes may allow a broader search: (((( using java code snippets ) OR ( dung hoc cong snippets ))) OR ( locating bug core snippets ))*.