Perhaps you should try some spelling variations:
"dung using java snippets" » "dung ung java snippets", "dung sinh java snippets", "dung uong java snippets", "dung using data snippets"
"dong cao cong snippets" » "duong cao cong snippets", "dong co cong snippets", "dong cho cong snippets", "dong cac cong snippets", "dong cao dang snippets", "dong cua cong snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core 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: "((((\"dong cao cong snippets\") OR (\"dung using java snippets\"))) OR (\"locating bug code snippets\"))~".
• Removing quotes may allow a broader search: (((( dong cao cong snippets ) OR ( dung using java snippets ))) OR ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("dong cao cong snippets") OR ("dung using java snippets"))) OR ("locating bug code snippets"))*.