Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khai bao cau snippets" » "hai ba cau snippets", "khi bai cau snippets", "khoi bay cau snippets", "khai bao cao snippets", "khai bo cau snippets", "khai tao cau 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: (((("khai bao cau snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("khai bao cau snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khai bao cau snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khai bao cau snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.