Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"kiem tao cau snippets" » "kien tao cau snippets", "kiem toan cau snippets", "kiem tra cau snippets", "kiem tao cu snippets", "kiem tao cao snippets", "kiem tao sau 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: (((("kiem tao 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: (((("kiem tao cau snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( kiem tao cau snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("kiem tao cau snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.