Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"trau cua con snippets" » "tru cua con snippets", "tranh cua con snippets", "tu cua con snippets", "trau cua cong snippets", "trau cua co snippets", "trau cua can 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: (((("trau cua con snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("trau cua con snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( trau cua con snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trau cua con snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.