Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"ngoc than vo snippets" » "ngoc thanh vo snippets", "ngoc thang vo snippets", "ngoc tuan vo snippets", "ngoc than va snippets", "ngoc than doc snippets", "ngoc than hoc 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 than vo 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 than vo snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( ngoc than vo snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ngoc than vo snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.