Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"che dan canh snippets" » "che van canh snippets", "che dan cach snippets", "che dan hanh snippets", "he dan canh snippets", "chi dan canh snippets", "che dai 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: (((("che dan 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: (((("che dan canh snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( che dan canh snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("che dan canh snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.