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