Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"ngu danh ve snippets" » "ngu anh ve snippets", "ngu dan ve snippets", "ngan danh ve snippets", "ngu dinh ve snippets", "ngu hanh ve 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: (((("ngu danh 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: (((("ngu danh ve snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( ngu danh ve snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ngu danh ve snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.