Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khoi thuc te snippets" » "choi thuc te snippets", "khoi thuy te snippets", "khoi thuat te snippets", "khoi thuc ve snippets", "khoi thuc tien snippets", "khoi thuc tin 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: (((("khoi thuc te snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("khoi thuc te snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khoi thuc te snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khoi thuc te snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.