Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"lanh dao vo snippets" » "lanh dao voi snippets", "lanh dao o snippets", "lanh dao do snippets", "lan dao vo snippets", "anh dao vo snippets", "hanh dao vo 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: (((("lanh dao vo snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("lanh dao vo snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( lanh dao vo snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lanh dao vo snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.