Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cong bang du snippets" » "cuong bang du snippets", "dong bang du snippets", "hong bang du snippets", "cong nang du snippets", "cong tang du snippets", "cong bang su 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 bang du 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 bang du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cong bang du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong bang du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.