Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nao san chi snippets" » "gao san chi snippets", "nao ban chi snippets", "tao san chi snippets", "nao van chi snippets", "nao luan chi snippets", "nao toan chi 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: (((("nao san chi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nao san chi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nao san chi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nao san chi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.