Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hanh moi he snippets" » "thanh moi he snippets", "hanh noi he snippets", "hanh mot he snippets", "hanh moi ve snippets", "hanh moi ke snippets", "hanh moi 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: (((("hanh moi he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hanh moi he snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hanh moi he snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hanh moi he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.