Perhaps you should try some spelling variations:
"cong nhoi cau snippets" » "cong nho cau snippets", "cong noi cau snippets", "cong hoa cau snippets", "cong hoi cau snippets", "cong nhoi mau snippets", "cong hoi chu 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: (((("cong nhoi 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: (((("cong nhoi cau snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cong nhoi cau snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong nhoi cau snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.