Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cuu duoc hoc snippets" » "cuu dac hoc snippets", "che duoc hoc snippets", "co duoc hoc snippets", "cuu quoc hoi 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: (((("cuu duoc hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cuu duoc hoc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cuu duoc hoc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cuu duoc hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.