Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nhan hang ke snippets" » "ngan hang ke snippets", "nhan dang ke snippets", "nha hang ke snippets", "nhan thong ke snippets", "nhan hanh kem snippets", "nhan nhung 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: (((("nhan hang 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: (((("nhan hang ke snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nhan hang ke snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nhan hang ke snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.