Perhaps you should try some spelling variations:
"lanh trinh cac snippets" » "hanh trinh cac snippets", "anh trinh cac snippets", "lanh tranh cac snippets", "lanh trinh cau snippets", "lanh trinh chat snippets", "lanh trinh chao 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: (((("lanh trinh cac snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("lanh trinh cac snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( lanh trinh cac snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lanh trinh cac snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.