Perhaps you should try some spelling variations:
"can trinh chao snippets" » "can trinh chat snippets", "can trinh han snippets", "can trinh co snippets", "can tranh chao snippets", "dan trinh chao snippets", "van trinh chao 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: (((("can trinh chao snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("can trinh chao snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( can trinh chao snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("can trinh chao snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.