Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"ngoc lon vo snippets" » "ngoc long vo snippets", "ngoc loan vo snippets", "ngoc lan vo snippets", "ngoc lon va snippets", "ngoc lon ve snippets", "ngoc lon vi 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: (((("ngoc lon vo snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("ngoc lon vo snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( ngoc lon vo snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ngoc lon vo snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.