Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"doc nam cao snippets" » "duoc nam cao snippets", "hoc nam cao snippets", "duc nam cao snippets", "doc nam sao snippets", "doc 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: (((("doc 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: (((("doc nam cao snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( doc nam cao snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doc nam cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.