Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"luan xay cho snippets" » "luat xay cho snippets", "luong xay cho snippets", "luan van cho snippets", "luan day cho snippets", "luan cay cho snippets", "luan xay chen 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: (((("luan xay cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("luan xay cho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( luan xay cho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luan xay cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.