Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"sach che que snippets" » "sach thue que snippets", "sach nha que snippets", "sach cap que snippets", "sach cho que snippets", "sach che quan snippets", "sach che quoc 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: (((("sach che que snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("sach che que snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( sach che que snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("sach che que snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.