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