Perhaps you should try some spelling variations:
"quang khang ton snippets" » "quang khanh ton snippets", "quang thanh ton snippets", "quang khai ton snippets", "quang hang ton snippets", "quang khong ton snippets", "quang khanh toan 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: (((("quang khang ton snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("quang khang ton snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( quang khang ton snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("quang khang ton snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.