Perhaps you should try some spelling variations:
"lanh trinh chao snippets" » "hanh trinh chao snippets", "anh trinh chao snippets", "lanh tranh chao snippets", "lanh trinh chat snippets", "lanh trinh han snippets", "lanh trinh co 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 chao 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 chao snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( lanh trinh chao snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lanh trinh chao snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.