Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"voi sang cho snippets" » "voi hang cho snippets", "voi nang cho snippets", "moi sang cho snippets", "voi danh cho snippets", "voi dung cho snippets", "voi sang tao 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: (((("voi sang 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: (((("voi sang cho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( voi sang cho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("voi sang cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.