Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khi ben canh snippets" » "khi bien canh snippets", "khi lenh canh snippets", "khi vien canh snippets", "khi nen canh snippets", "chi ben canh snippets", "khi ban 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: (((("khi ben 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: (((("khi ben canh snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khi ben canh snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khi ben canh snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.