Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"sach tu chat snippets" » "sach thu chat snippets", "cach tu chat snippets", "sach ty chat snippets", "sach tu phat snippets", "sach tu cham snippets", "sach du chat 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 tu chat 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 tu chat snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( sach tu chat snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("sach tu chat snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.