Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"lam da nghe snippets" » "lam day nghe snippets", "lam va nghe snippets", "lam dang nghe snippets", "lam dau nghe snippets", "lam dao nghe snippets", "lam dat 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: (((("lam da 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: (((("lam da nghe snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( lam da nghe snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lam da nghe snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.