Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"lan sach cap snippets" » "ban sach cap snippets", "lam sach cap snippets", "lai sach cap snippets", "lan sach dao snippets", "lan sach bai snippets", "lan sach xa 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 sach cap 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 sach cap snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( lan sach cap snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lan sach cap snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.