Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"chet duoc da snippets" » "che duoc da snippets", "cho duoc da snippets", "che quoc da snippets", "chet duoc dai snippets", "chet duoc dan snippets", "chet duoc dao 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: (((("chet duoc da snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("chet duoc da snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( chet duoc da snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("chet duoc da snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.