Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"lan cong chu snippets" » "luan cong chu snippets", "lanh cong chu snippets", "van cong chu snippets", "lan cong chuc snippets", "lan cong chua snippets", "lan cong cu 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: (((("lan cong chu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("lan cong chu snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( lan cong chu snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lan cong chu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.