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