Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nho cau chap snippets" » "nho cau cham snippets", "nho cau chan snippets", "nho cau phap snippets", "nhu cau chap snippets", "nano cau chap snippets", "nhin cau chap 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: (((("nho cau chap snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nho cau chap snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nho cau chap snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nho cau chap snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.