Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cach nan cua snippets" » "cach nao cua snippets", "cach van cua snippets", "cach nhanh cua snippets", "cach nhan cua snippets", "cach ban cua snippets", "cach nam cua 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: (((("cach nan 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: (((("cach nan cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cach nan cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cach nan cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.