Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"den nam cham snippets" » "den nang cham snippets", "den nam chi snippets", "den nam cao snippets", "dan nam cham snippets", "det nam cham snippets", "den cam 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 nam 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 nam cham snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( den nam cham snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("den nam cham snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.