Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cach do cua snippets" » "cach de cua snippets", "sach dao cua snippets", "cach noi cua snippets", "cach doi cua snippets", "cach co cua 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: (((("cach do cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cach do cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cach do cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cach do cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.