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