Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tan thinh do snippets" » "van thinh do snippets", "tien thinh do snippets", "tai chinh do snippets", "tan trinh do snippets", "tan thanh do snippets", "tan chinh do 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: (((("tan thinh do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tan thinh do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tan thinh do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tan thinh do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.