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