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