Perhaps you should try some spelling variations:
"data using java snippets" » "data using data snippets"
"dung lam chet snippets" » "dung luan chet snippets", "dung tai chet snippets", "dung dat chet snippets", "dung lam chat snippets", "dung la chet snippets", "dung lam chu 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 chet 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 chet snippets") OR ("data using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung lam chet snippets ) or ( data using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung lam chet snippets") or ("data using java snippets"))) or ("locating bug code snippets"))*.