Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"duoc cua cu snippets" » "duoc sua cu snippets", "nuoc cua cu snippets", "doc cua cu snippets", "duoc cua chu snippets", "duoc cua su snippets", "duoc cua co 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: (((("duoc cua cu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("duoc cua cu snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( duoc cua cu snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("duoc cua cu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.