Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"giai toan 31 snippets" » "giai doan 31 snippets", "giai toa 31 snippets", "gioi toan 31 snippets", "giai toan 31 slippers"
"locating bug code snippets" » "locating bug code slippers", "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: (((("giai toan 31 snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("giai toan 31 snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( giai toan 31 snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("giai toan 31 snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.