Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"lam truoc du snippets" » "lam thuoc du snippets", "nam truoc du snippets", "lam truong du snippets", "lam truc du snippets", "lam truoc bua 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 truoc du 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 truoc du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( lam truoc du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lam truoc du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.