Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets"
"dung tao duoc snippets" » "dung tai duoc snippets", "dung bao duoc snippets", "dung tay duoc snippets", "dung tao duc snippets", "dung tao quoc 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 tao duoc 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 tao duoc snippets\"))) OR (\"locating bug core snippets\"))*".
• Removing quotes may allow a broader search: (((( using java code snippets ) OR ( dung tao duoc snippets ))) OR ( locating bug core snippets ))*.