Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"kiem van chu snippets" » "kiem va chu snippets", "kien van chu snippets", "kieu van chu snippets", "kiem van chi snippets", "kiem van phu snippets", "kiem van 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: (((("kiem van chu 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 van chu snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( kiem van chu snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("kiem van chu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.