Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nam chat cua snippets" » "nam nhat cua snippets", "dam chat cua snippets", "lam chat cua snippets", "nam chat va snippets", "nam chat huu 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: (((("nam chat 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: (((("nam chat cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nam chat cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nam chat cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.