Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thuoc do he snippets" » "thuoc bo he snippets", "thuoc ho he snippets", "thuoc co he snippets", "thuoc do ke snippets", "thuoc do le snippets", "thuoc do ve 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 do he 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 do he snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thuoc do he snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thuoc do he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.