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