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