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