Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"doc phuc cua snippets" » "doc thuc cua snippets", "do phuc cua snippets", "duc phuc cua snippets", "doc hoc cua snippets", "doc phuc vu 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: (((("doc phuc 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: (((("doc phuc cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( doc phuc cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doc phuc cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.