Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thuoc so do snippets" » "thuoc bo do snippets", "thuoc ho do snippets", "thuoc co do snippets", "thuoc so du snippets", "thuoc so dk 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: (((("thuoc so do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thuoc so do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thuoc so do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thuoc so do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.