Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"lan dao hoi snippets" » "lanh dao hoi snippets", "van dao hoi snippets", "lan dau hoi snippets", "lan dao thoi snippets", "lan dai hoi snippets", "lan dao ho 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 dao 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 dao hoi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( lan dao hoi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lan dao hoi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.