Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dinh hoc de snippets" » "sinh hoc de snippets", "hinh hoc de snippets", "tinh hoc de snippets", "dinh hoc he snippets", "dinh hoc te snippets", "dinh hoc do 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: (((("dinh hoc de snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dinh hoc de snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dinh hoc de snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dinh hoc de snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.