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