Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"using java java snippets" » "using data java snippets"
"dao cuong va snippets" » "dai cuong va snippets", "doan cuong va snippets", "cao cong va snippets", "dao luong va snippets", "dao duong va snippets", "dao cong va 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 java snippets") OR ("dao cuong va snippets"))) OR ("locating bug core snippets"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"using java java snippets\") OR (\"dao cuong va snippets\"))) OR (\"locating bug core snippets\"))*".
• Removing quotes may allow a broader search: (((( using java java snippets ) OR ( dao cuong va snippets ))) OR ( locating bug core snippets ))*.