Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"vua chon cac snippets" » "lua chon cac snippets", "qua con cac snippets", "va chong cac snippets", "vua cho cac snippets", "vua thong cac snippets", "vua hoc cac 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: (((("vua chon cac snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("vua chon cac snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( vua chon cac snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("vua chon cac snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.