Perhaps you should try some spelling variations:
"dung vbug code snippets" » "dung vung code snippets", "dung vbug code slippers", "dung vbung code snippets", "dung vbugs code snippets"
"thong tin java snippets" » "thong trinh java snippets", "thong think java snippets", "thong tin va snippets", "trong tin java snippets", "thong tin java slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code 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: (((("thong tin java snippets") or ("dung vbug code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thong tin java snippets") OR ("dung vbug code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thong tin java snippets ) or ( dung vbug code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thong tin java snippets") or ("dung vbug code snippets"))) or ("locating bug code snippets"))*.