Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"voi cong goi snippets" » "noi cong goi snippets", "moi cong goi snippets", "tai cong goi snippets", "voi cong noi snippets", "voi cong soi snippets", "voi dong goi 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 cong goi 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 cong goi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( voi cong goi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("voi cong goi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.