Perhaps you should try some spelling variations:
"cong hoi trach snippets" » "cong hoi trac snippets", "cong bo trach snippets", "cong co trach snippets", "cong nhoi trach snippets", "cong hoa trach snippets", "cong hai trach snippets", "cong hoi trach slippers"
"dung java java snippets" » "dung va java snippets", "dung java java slippers"
"locating bug code snippets" » "locating bug code slippers", "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 hoi trach 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 hoi trach snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cong hoi trach snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong hoi trach snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.