Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nang tu cu snippets" » "nang du cu snippets", "nang luc cu snippets", "nang tu cua snippets", "nang tu chu snippets", "nang tu cau 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: (((("nang tu cu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nang tu cu snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nang tu cu snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nang tu cu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.