Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"than du canh snippets" » "than duc canh snippets", "toan du canh snippets", "han du canh snippets", "than du hanh snippets", "than do canh snippets", "than luc canh 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: (((("than du canh snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("than du canh snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( than du canh snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("than du canh snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.