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