Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"mai viet voi snippets" » "thi viet voi snippets", "mai viec voi snippets", "mai viet doi snippets", "mai viet duoi 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: (((("mai viet voi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("mai viet voi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( mai viet voi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("mai viet voi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.