Perhaps you should try some spelling variations:
"data using java snippets" » "data using data snippets"
"dung lam can snippets" » "dung luan can snippets", "dung tai can snippets", "dung dat can snippets", "dung lam san snippets", "dung lam ban snippets", "dung lam gan snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core 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: (((("dung lam can snippets") or ("data using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung lam can snippets") OR ("data using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung lam can snippets ) or ( data using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung lam can snippets") or ("data using java snippets"))) or ("locating bug code snippets"))*.