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