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