Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"ngu pha cac snippets" » "ngu phap cac snippets", "ngu phu cac snippets", "ngu thai cac snippets", "ngu phan cac snippets", "ngu pha 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: (((("ngu pha cac snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("ngu pha cac snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( ngu pha cac snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ngu pha cac snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.