Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"boc tang cua snippets" » "soc trang cua snippets", "tuc tang cua snippets", "hoc tan cua snippets", "boc mang cua snippets", "boc hang cua snippets", "boc tang luan 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: (((("boc tang 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: (((("boc tang cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( boc tang cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("boc tang cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.