Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nham thuc ke snippets" » "nhan thuc ke snippets", "nam thuc ke snippets", "nham thu ke snippets", "nham thuc te snippets", "nham thuc ve snippets", "nham chuc ke 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: (((("nham thuc ke snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nham thuc ke snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nham thuc ke snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nham thuc ke snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.