Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nong dan ve snippets" » "cong dan ve snippets", "nong san ve snippets", "nguong dan ve snippets", "nong ban ve snippets", "nong dan va snippets", "nong dan viet 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: (((("nong dan ve snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nong dan ve snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nong dan ve snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nong dan ve snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.