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