Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"son do thoi snippets" » "son dao thoi snippets", "son doi thoi snippets", "son do thi snippets", "son d thoi snippets", "son da thoi snippets", "son di thoi snippets", "son do thoi slippers"
"locating bug code snippets" » "locating bug code slippers", "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: (((("son do thoi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("son do thoi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( son do thoi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("son do thoi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.