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