Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"luoc cong ho snippets" » "nuoc cong ho snippets", "luc cong ho snippets", "quoc cong ho snippets", "luoc cong hoa snippets", "luoc cong cho snippets", "luoc cong hon 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: (((("luoc cong ho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("luoc cong ho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( luoc cong ho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luoc cong ho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.