Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"xin van canh snippets" » "xin van anh snippets", "xin van hanh snippets", "xin van manh snippets", "dinh van canh snippets", "dien van canh snippets", "gian van 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: (((("xin van 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: (((("xin van canh snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( xin van canh snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("xin van canh snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.