Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dong khi can snippets" » "duong khi can snippets", "cong khi can snippets", "dong thi can snippets", "dong khoi can snippets", "dong khi ban snippets", "dong khi con 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: (((("dong khi can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dong khi can snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dong khi can snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong khi can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.