Perhaps you should try some spelling variations:
"quang thanh chi snippets" » "quan thanh chi snippets", "hoang thanh chi snippets", "muong thanh chi snippets", "quang thanh cha snippets", "quang thanh chu snippets", "quang thanh nghi 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 thanh chi 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 thanh chi snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( quang thanh chi snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("quang thanh chi snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.