Perhaps you should try some spelling variations:
"locating bug code slippers" » "locating bug code snippets", "locating bung code slippers", "locating bugs code slippers"
"duong java java snippets" » "duong va java snippets"
"dung voi robot snippets" » "dung so robot snippets", "dung von robot snippets", "dung doi robot snippets", "dung vi robot 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: (((("duong java java snippets") or ("dung voi robot snippets"))) or ("locating bug code slippers"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("duong java java snippets") OR ("dung voi robot snippets"))) OR ("locating bug code slippers")).
• Removing quotes may allow a broader search: (((( duong java java snippets ) or ( dung voi robot snippets ))) or ( locating bug code slippers )).
• Adding a wildcard symbol may retrieve word variants: (((("duong java java snippets") or ("dung voi robot snippets"))) or ("locating bug code slippers"))*.