Perhaps you should try some spelling variations:
"data using java snippets" » "data using data snippets", "data using java slippers"
"dong cung code snippets" » "dong chung code snippets", "dong hung code snippets", "dong cong code snippets", "dong cung code slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code snippets"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("dong cung code snippets") or ("data using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dong cung code snippets") OR ("data using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dong cung code snippets ) or ( data using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong cung code snippets") or ("data using java snippets"))) or ("locating bug code snippets"))*.