Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"van nuoi con snippets" » "van noi con snippets", "vat nuoi con snippets", "ban nuoi con snippets", "van nuoi lon snippets", "van nguoi cong snippets", "van nuoc cong 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: (((("van nuoi con snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("van nuoi con snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( van nuoi con snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("van nuoi con snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.