Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"lan thanh do snippets" » "luan thanh do snippets", "lang thanh do snippets", "ban thanh do snippets", "lan thanh pho snippets", "lan thanh hoa snippets", "lan thanh loi 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: (((("lan thanh do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("lan thanh do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( lan thanh do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lan thanh do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.