Perhaps you should try some spelling variations:
"data using java snippets" » "data using data snippets"
"dung chao chao snippets" » "dung cho chao snippets", "dung chat chao snippets", "dung chau chao snippets", "dung cao chat snippets", "dung cao cho snippets", "dung chat cho 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 chao chao 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 chao chao snippets") OR ("data using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung chao chao snippets ) or ( data using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung chao chao snippets") or ("data using java snippets"))) or ("locating bug code snippets"))*.