Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"mao cong da snippets" » "cao cong da snippets", "may cong da snippets", "vao cong da snippets", "mao cong dan snippets", "mao cong dac snippets", "mao cong dau 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 da 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 da snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( mao cong da snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("mao cong da snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.