Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nhan duoc c snippets" » "nhan cuoc c snippets", "nhan quoc c snippets", "phan duoc c snippets", "nhan duoc co snippets", "nhan duoc 1 snippets", "nhan duoc 2 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: (((("nhan duoc c snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nhan duoc c snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nhan duoc c snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nhan duoc c snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.