Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dong tat den snippets" » "dong tai den snippets", "dong vat den snippets", "dong dat den snippets", "dong tac den snippets", "dong tot den snippets", "dong thai 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 tat 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 tat den snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dong tat den snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong tat den snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.