Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tan tinh he snippets" » "tan thinh he snippets", "ban tinh he snippets", "man tinh he snippets", "tan trinh he snippets", "tan tinh ha snippets", "tan tich he 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: (((("tan tinh he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tan tinh he snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tan tinh he snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tan tinh he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.