Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tan chat cua snippets" » "van chat cua snippets", "tao chat cua snippets", "ban chat cua snippets", "tan nhat cua snippets", "tan chat va snippets", "tan chat huu 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 chat cua 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 chat cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tan chat cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tan chat cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.