Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"lan van cam snippets" » "luan van cam snippets", "lang van cam snippets", "tan van cam snippets", "lan van nam snippets", "lan van lam snippets", "lan van 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 van cam 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 van cam snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( lan van cam snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lan van cam snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.