Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"kho vu cong snippets" » "kho va cong snippets", "kho tu cong snippets", "kho cua cong snippets", "kho mu cong snippets", "khong vu cong 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: (((("kho vu cong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("kho vu cong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( kho vu cong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("kho vu cong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.