Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phi luan ke snippets" » "thi luan ke snippets", "phi quan ke snippets", "phap luan ke snippets", "phi luan ket snippets", "phi luat ke snippets", "phi luan ve 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: (((("phi luan ke snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("phi luan ke snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phi luan ke snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phi luan ke snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.