Perhaps you should try some spelling variations:
"quang khang ve snippets" » "quang khanh ve snippets", "quang thanh ve snippets", "quang khai ve snippets", "quang hang ve snippets", "quang khang vi snippets", "quang khang voi 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 ve 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 ve snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( quang khang ve snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("quang khang ve snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.