Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dong cao den snippets" » "duong cao den snippets", "dong co den snippets", "dong cho den snippets", "dong cao de snippets", "dong cap den snippets", "dong cau 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: (((("dong cao 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: (((("dong cao den snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dong cao den snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong cao den snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.