Perhaps you should try some spelling variations:
"data using java snippets" » "data using data snippets"
"dong ca cac snippets" » "dong cua cac snippets", "dong cac cac snippets", "dong cao cac snippets", "dong va cac 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: "((((\"data using java snippets\") OR (\"dong ca cac snippets\"))) OR (\"locating bug code snippets\"))~".
• Removing quotes may allow a broader search: (((( data using java snippets ) OR ( dong ca cac snippets ))) OR ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("data using java snippets") OR ("dong ca cac snippets"))) OR ("locating bug code snippets"))*.