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