Perhaps you should try some spelling variations:
"locating bugs code snippets" » "locating bug code snippets", "locating bugs code slippers"
"dung dan code snippets" » "dung dat code snippets", "dung san code snippets", "tung dan code snippets", "dung dan de snippets", "dung dan code slippers"
"van bac code snippets" » "van bug code snippets", "van ban code snippets", "van bao code snippets", "van hac code snippets", "van bac code slippers"

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: (((("dung dan code snippets") or ("van bac code snippets"))) or ("locating bugs code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung dan code snippets") OR ("van bac code snippets"))) OR ("locating bugs code snippets")).
• Removing quotes may allow a broader search: (((( dung dan code snippets ) or ( van bac code snippets ))) or ( locating bugs code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung dan code snippets") or ("van bac code snippets"))) or ("locating bugs code snippets"))*.