Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"den xua cham snippets" » "den qua cham snippets", "den xuat chao snippets", "den va cham snippets", "den xa cham snippets", "den tuan cham 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 xua cham 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 xua cham snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( den xua cham snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("den xua cham snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.