Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"vao rong cho snippets" » "vao trong cho snippets", "vao cong cho snippets", "tao trong cho snippets", "vao dong cho snippets", "vao luong cho 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: (((("vao rong cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("vao rong cho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( vao rong cho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("vao rong cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.