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