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