Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tat thanh do snippets" » "tai thanh do snippets", "ta thanh do snippets", "tat thang do snippets", "tat thanh pho snippets", "tat thanh hoa snippets", "tat 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: (((("tat 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: (((("tat thanh do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tat thanh do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tat thanh do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.