Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"bot khoa cao snippets" » "bo khoa cao snippets", "ngot khoa cao snippets", "von khoa cao snippets", "bot khoa cam snippets", "bot khoa can snippets", "bot khoa cap 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: (((("bot khoa cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("bot khoa cao snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( bot khoa cao snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("bot khoa cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.