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