Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phi tai hoan snippets" » "phi tai khoan snippets", "phi thi hoan snippets", "phi tri hoan snippets", "phoi tai hoan snippets", "pham tai hoan 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: (((("phi tai hoan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("phi tai hoan snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phi tai hoan snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phi tai hoan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.