Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"luan tac du snippets" » "luan tach du snippets", "luan dac du snippets", "luan thuc du snippets", "luan tac dau snippets", "luan cac du snippets", "luan tac da 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: (((("luan tac du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("luan tac du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( luan tac du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luan tac du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.