Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dao tinh soc snippets" » "dac tinh soc snippets", "dao minh soc snippets", "dao dinh soc snippets", "dao tinh hoc snippets", "dao tinh son snippets", "dao tinh so 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: (((("dao tinh soc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dao tinh soc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dao tinh soc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dao tinh soc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.