Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tre can moi snippets" » "tre dan moi snippets", "tiep can moi snippets", "tiem can moi snippets", "tre ban moi snippets", "tre cac moi snippets", "tre chat moi 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 can moi 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 can moi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tre can moi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tre can moi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.