Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tue tinh he snippets" » "thue tinh he snippets", "tuyen tinh he snippets", "thuy tinh he snippets", "tue trinh he snippets", "tue tinh ha snippets", "tue 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: (((("tue 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: (((("tue tinh he snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tue tinh he snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tue tinh he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.