Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hai linh can snippets" » "hoai linh can snippets", "thai binh can snippets", "phai sinh can snippets", "hai minh can snippets", "hai kinh can snippets", "hai lich can 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: (((("hai linh can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hai linh can snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hai linh can snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hai linh can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.