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