Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"luan day ho snippets" » "luan dac ho snippets", "luan xay ho snippets", "luat day ho snippets", "luan day hoc snippets", "luan day cho snippets", "luan day hoa 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 day ho 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 day ho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( luan day ho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luan day ho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.