Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khi cu chap snippets" » "khi cau chap snippets", "khi cu phap snippets", "khi chu chan snippets", "khi cua chap snippets", "thi cu 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: (((("khi cu 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: (((("khi cu chap snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khi cu chap snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khi cu chap snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.