Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nam chon doi snippets" » "nam cho doi snippets", "nam hon doi snippets", "nam chien doi snippets", "nam chon gioi snippets", "nam chong doc 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 chon doi 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 chon doi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nam chon doi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nam chon doi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.