Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"sach lo cham snippets" » "sach dao cham snippets", "sach doi cham snippets", "sach hoi cham snippets", "sach co cham snippets", "sach lo chai snippets", "sach toc cham 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 lo cham 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 lo cham snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( sach lo cham snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("sach lo cham snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.