Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cao nam cao snippets" » "cao dam cao snippets", "dao nam cao snippets", "cai nam cao snippets", "cao nam sao snippets", "cao nam giao 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: (((("cao nam cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cao nam cao snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cao nam cao snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cao nam cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.