Perhaps you should try some spelling variations:
"dung thuc chan snippets" » "dung thuc code snippets", "dung thuoc chan snippets", "duong thuc chan snippets", "dung thu chan snippets", "dung thuc can snippets", "dung thuc nhan snippets", "dung thuc phan snippets"
"locating bug core snippets" » "locating bug code snippets"
"hanh java java snippets" » "hanh va java 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: (((("hanh java java snippets") or ("dung thuc chan snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hanh java java snippets") OR ("dung thuc chan snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( hanh java java snippets ) or ( dung thuc chan snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hanh java java snippets") or ("dung thuc chan snippets"))) or ("locating bug core snippets"))*.