Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dat dau moi snippets" » "dat dai moi snippets", "bat dau moi snippets", "dat cau moi snippets", "dat dau mo snippets", "dat dau mot 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: (((("dat dau moi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dat dau moi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dat dau moi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dat dau moi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.