Perhaps you should try some spelling variations:
"chieu sach a snippets" » "chinh sach a snippets", "chiet tach a snippets", "chieu sang a snippets", "chieu sach xa snippets", "chieu sach ha snippets", "chieu sach va snippets", "chieu sach a slippers"
"python using java snippets" » "python using data snippets", "python using java slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("chieu sach a snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("chieu sach a snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( chieu sach a snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("chieu sach a snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.