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