Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tra bat cua snippets" » "tra bao cua snippets", "tra chat cua snippets", "tran bai cua snippets", "tra ban cua snippets", "tra mat cua snippets", "tra bai cua 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: (((("tra bat cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tra bat cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tra bat cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tra bat cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.