Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"doi mang hoc snippets" » "do mang hoc snippets", "doi khang hoc snippets", "doi song hoc snippets", "doi nang hoc snippets", "doi bang hoc snippets", "doi mang loc 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: (((("doi mang hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("doi mang hoc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( doi mang hoc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doi mang hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.