Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"den va cau snippets" » "dien va cau snippets", "den vai cau snippets", "den vay cau snippets", "den van cau snippets", "den va cac snippets", "den va dau 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 va cau 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 va cau snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( den va cau snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("den va cau snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.