Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"long ve toi snippets" » "luong va toi snippets", "duong ve toi snippets", "long ve thoi snippets", "long ve tuoi snippets", "long ve moi 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: (((("long ve toi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("long ve toi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( long ve toi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("long ve toi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.