Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khai luan ve snippets" » "khau luan ve snippets", "khai tuan ve snippets", "thai luan ve snippets", "khai luat ve snippets", "khai luan va snippets", "khai quan ve 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 luan ve 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 luan ve snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khai luan ve snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khai luan ve snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.