Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cach van cao snippets" » "cac van cao snippets", "bach van cao snippets", "canh van cao snippets", "cach van dao snippets", "cach van bao snippets", "cach van cau 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 van cao 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 van cao snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cach van cao snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cach van cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.