Perhaps you should try some spelling variations:
"trong thuc hon snippets" » "trong thu hon snippets", "thuong thuc hon snippets", "trong thuat hon snippets", "trong phuc hon snippets", "trong thuc con snippets", "trong tuc hon 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: (((("dung java java snippets") or ("trong thuc hon snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung java java snippets") OR ("trong thuc hon snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung java java snippets ) or ( trong thuc hon snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") or ("trong thuc hon snippets"))) or ("locating bug code snippets"))*.