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