Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"lam toi du snippets" » "lam thoi du snippets", "lam tai du snippets", "nam tuoi du snippets", "lam toi uu snippets", "lam tri du snippets", "lam toi da 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 toi 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 toi du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( lam toi du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lam toi du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.