Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"mot hanh he snippets" » "mot thanh he snippets", "mot doanh he snippets", "hoc hanh he snippets", "mot hanh che snippets", "mot hanh ve snippets", "mot hanh 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: (((("mot hanh 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: (((("mot hanh he snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( mot hanh he snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("mot hanh he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.