Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nom tang cua snippets" » "nam tang cua snippets", "nham tang cua snippets", "nen tang cua snippets", "nom mang cua snippets", "nom hang cua snippets", "nom tang luan 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: (((("nom tang 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: (((("nom tang cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nom tang cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nom tang cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.