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