Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"ngan hang de snippets" » "ngan hoang de snippets", "ngan hanh de snippets", "ngan hang di snippets", "nganh hang de snippets", "nhan hang de 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: (((("ngan hang de snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("ngan hang de snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( ngan hang de snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ngan hang de snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.