Perhaps you should try some spelling variations:
"thoan ran cau snippets" » "thoan tran cau snippets", "thoai van cau snippets", "hoa ran cau snippets", "thoan van cau snippets", "thoan ban cau snippets", "thoan can cau 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: (((("thoan ran cau snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thoan ran cau snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thoan ran cau snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thoan ran cau snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.