Perhaps you should try some spelling variations:
"dung choi thuc snippets" » "dung hoc thuc snippets", "dung hoi chuc snippets", "dung cho thue snippets", "dung cho thuc snippets", "dung chi thuc snippets", "dung thoi thuc snippets", "dung choi thuc slippers"
"cong trinh java snippets" » "cong trinh 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 trinh java snippets") or ("dung choi thuc snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cong trinh java snippets") OR ("dung choi thuc snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cong trinh java snippets ) or ( dung choi thuc snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong trinh java snippets") or ("dung choi thuc snippets"))) or ("locating bug code snippets"))*.