Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nhan dan xo snippets" » "phan dau xo snippets", "gian dan xo snippets", "nhan tai xo snippets", "nhan dan mo snippets", "nhan dan so snippets", "nhan dan xa 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: (((("nhan dan xo snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nhan dan xo snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nhan dan xo snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nhan dan xo snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.