Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tat nam cac snippets" » "tay nam cac snippets", "tan nam cac snippets", "tat tam cac snippets", "tat nam cao snippets", "tat nam sach 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: (((("tat nam cac snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tat nam cac snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tat nam cac snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tat nam cac snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.