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