Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"lan hang cau snippets" » "ban hang cau snippets", "van hang cau snippets", "lan hung cau snippets", "lan hang dau snippets", "lan hang ca snippets", "lan nhung cau 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 hang cau 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 hang cau snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( lan hang cau snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lan hang cau snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.