Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dao luoc cac snippets" » "dao cuoc cac snippets", "dai luoc cac snippets", "dao duc cac snippets", "dao duoc cac snippets", "dao luoc can snippets", "dao quoc cac 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: (((("dao luoc cac snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dao luoc cac snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dao luoc cac snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dao luoc cac snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.