Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"luc bat nghe snippets" » "luc bai nghe snippets", "luc dat nghe snippets", "luc van nghe snippets", "suc bat nghe snippets", "luc nhat nghe snippets", "luat bat nghe 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: (((("luc bat nghe snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("luc bat nghe snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( luc bat nghe snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luc bat nghe snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.