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