Perhaps you should try some spelling variations:
"data using java snippets" » "data using data snippets"
"dung sat che snippets" » "duong sat che snippets", "dung dat che snippets", "dung sai che snippets", "dung sach che snippets", "dung sang che snippets", "dung hat cheo 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 sat che 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 sat che snippets") OR ("data using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung sat che snippets ) or ( data using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung sat che snippets") or ("data using java snippets"))) or ("locating bug code snippets"))*.