Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thep hoc noi snippets" » "te hoc noi snippets", "thai hoc noi snippets", "phap hoc noi snippets", "thep hoc nuoc 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: (((("thep hoc 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: (((("thep hoc noi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thep hoc noi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thep hoc noi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.