Perhaps you should try some spelling variations:
"nang thon cuc snippets" » "nong thon cuc snippets", "nang chon cuc snippets", "nang thuong cuc snippets", "nang thong cua snippets", "nang thong cac snippets", "nang thon nuoc snippets"
"dung java java snippets" » "dung va java 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: (((("nang thon cuc snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nang thon cuc snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nang thon cuc snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nang thon cuc snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.