Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"trang de cac snippets" » "trang do cac snippets", "trang du cac snippets", "trang ke cac snippets", "trang den cac snippets", "trang ve cac snippets", "trang de cai 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: (((("trang de 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: (((("trang de cac snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( trang de cac snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trang de cac snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.