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