Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nang dan cu snippets" » "nang danh cu snippets", "nong dan cu snippets", "nang dau cu snippets", "nang dan cua snippets", "nang dan ca snippets", "nang dan su 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 dan 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 dan cu snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nang dan cu snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nang dan cu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.