Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"ngoc tu doi snippets" » "ngoc thu doi snippets", "ngon tu doi snippets", "ngoc tuan doi snippets", "ngoc tu do snippets", "ngoc te doi snippets", "ngoc tu di 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 tu 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: (((("ngoc tu doi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( ngoc tu doi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ngoc tu doi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.