Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"lan dai hoi snippets" » "lang dai hoi snippets", "can dai hoi snippets", "lan dau hoi snippets", "lan dai hoc snippets", "lan dai hai snippets", "lan dai 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: (((("lan dai hoi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("lan dai hoi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( lan dai hoi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lan dai hoi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.