Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"van menh ve snippets" » "van minh ve snippets", "van manh ve snippets", "van anh ve snippets", "van benh ve snippets", "van menh de 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 menh 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: (((("van menh ve snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( van menh ve snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("van menh ve snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.