Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"kim nhan cho snippets" » "kim ngan cho snippets", "kim nham cho snippets", "kim thanh cho snippets", "kim han cho snippets", "kim nhan nho snippets", "kim chan cho 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: (((("kim nhan cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("kim nhan cho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( kim nhan cho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("kim nhan cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.