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