Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cong noi cua snippets" » "cong nhoi cua snippets", "cong goi cua snippets", "cong soi cua snippets", "cong hoi cua snippets", "cong doi cua snippets", "cong moi 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: (((("cong noi 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: (((("cong noi cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cong noi cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong noi cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.