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