Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"vong dan ve snippets" » "cong dan ve snippets", "nong dan ve snippets", "dong dan ve snippets", "vong ban ve snippets", "vong dan va snippets", "vong 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: (((("vong 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: (((("vong dan ve snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( vong dan ve snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("vong dan ve snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.