Perhaps you should try some spelling variations:
"dat doc dao snippets" » "dat duoc dao snippets", "day doc dao snippets", "dat nuoc dao snippets", "dat toc dao snippets", "dat duc dao snippets", "dat hoc dao snippets", "dat doc dao slippers"
"dung va java snippets" » "dung java java snippets", "dung va java slippers"
"locating bug code snippets" » "locating bug code slippers", "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: (((("dat doc dao snippets") or ("dung va java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dat doc dao snippets") OR ("dung va java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dat doc dao snippets ) or ( dung va java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dat doc dao snippets") or ("dung va java snippets"))) or ("locating bug code snippets"))*.