Perhaps you should try some spelling variations:
"locating bug code slippers" » "locating bug code snippets", "locating bung code slippers", "locating bugs code slippers"
"data using java snippets" » "data using data snippets"
"dung viet trac snippets" » "nang viet trac snippets", "cong viet trac snippets", "mang viet trac snippets", "dung viet tran snippets", "dung viet trang snippets", "dung viet thuc 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: (((("data using java snippets") or ("dung viet trac snippets"))) or ("locating bug code slippers"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("data using java snippets") OR ("dung viet trac snippets"))) OR ("locating bug code slippers")).
• Removing quotes may allow a broader search: (((( data using java snippets ) or ( dung viet trac snippets ))) or ( locating bug code slippers )).
• Adding a wildcard symbol may retrieve word variants: (((("data using java snippets") or ("dung viet trac snippets"))) or ("locating bug code slippers"))*.