Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"ngoc tan hoi snippets" » "ngoc tuan hoi snippets", "ngoc toan hoi snippets", "ngoc lan hoi snippets", "ngoc dan hoi snippets", "ngoc tao hoi snippets", "ngoc tay hoi 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 tan hoi 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 tan hoi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( ngoc tan hoi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ngoc tan hoi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.