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