Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"van ngoc ao snippets" » "tran ngoc ao snippets", "van hoc ao snippets", "van nghe ao snippets", "van ngoc hao snippets", "van ngoc ai snippets", "van nuoc ao 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: (((("van ngoc ao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("van ngoc ao snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( van ngoc ao snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("van ngoc ao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.